Diagnostics

All tools
List of tools tagged as Diagnostics
Route Table Longest Match Checker
Check which IPv4 or IPv6 route wins for a destination, with longest-prefix ranking, equal-prefix policy choices, and host-bit warnings.
API Error Budget Analyzer
Measure API error-budget burn from status counts or access-log snippets, with SLO projections, status-code policy checks, and burn guardrails.
Ad Network Detector
Check a public page for ad-network tags, ads.txt seller alignment, confidence scores, fetch warnings, charts, and prioritized follow-up actions.
Alcohol Screener Comparator
Compare AUDIT-C, AUDIT-10, and CAGE with route scores, cutoff context, coverage charts, and follow-up notes before an alcohol review.
Alcohol Use Disorders Identification Test (AUDIT-10)
Score the 10-item AUDIT alcohol screen, see WHO risk zones, domain patterns, priority cues, and follow-up notes for safer review.
Alcohol Use Disorders Identification Test (AUDIT-C)
Score AUDIT-C alcohol screening answers, compare 3+, 4+, VA/DoD 5+, and 8+ reference lines, and review the strongest item cue.
Alert Noise Rate Calculator
Calculate alert noise from classified CSV rows, compare routes with your target, and spot repeat groups, ack delays, and cleanup gaps.
Application Log Pattern Analyzer
Analyze application log excerpts in your browser, group repeated failure patterns, and review severity counts, time buckets, and triage rows.
Application Programming Interface (API) Testing Tool
Test an HTTP API directly from your browser, import cURL commands, inspect CORS-blocked failures, and save clean response traces.
Audit Log Anomalies Analyzer
Analyze audit log exports in your browser, ranking failure bursts, privilege changes, source shifts, and after-hours activity with evidence.
Autonomous System Number (ASN) Information Lookup
Look up an ASN or public IP, then compare routing visibility, prefixes, RDAP contacts, and PeeringDB clues in one focused report.
BGP AS Path Policy Checker
Check pasted BGP AS paths for wrong origins, blocked ASNs, regex misses, long paths, and prepend watch findings before policy changes.
BMI-for-Age Percentile Calculator
Calculate a child's BMI-for-age percentile from height and weight or a known BMI, then compare WHO/CDC z-score, category, and P95 severity cues.
Bandwidth Delay Product Calculator
Size TCP windows from bandwidth and RTT, compare current buffers and stream counts, and spot BDP, overhead, and scaling warnings.
Beck Anxiety Inventory (BAI) Assessment
Score the 21-item BAI for past-week anxiety symptoms, review severity bands, the 16+ cue, symptom mix, high items, and prior-score change.
Beck Depression Inventory-II (BDI-II)
Score 21 BDI-II depression-symptom answers over two weeks, see severity bands, Item 9 safety context, driver items, and answer exports.
Beck Hopelessness Scale (BHS) Assessment
Assess past-week hopelessness with 20 true-or-false BHS items, severity bands, score-source charts, and clear follow-up cautions.
Bicycle Tire Pressure Calculator
Calculate front and rear bicycle tire pressures from rider weight, measured tire and rim width, surface, setup, temperature, and safety limits.
Blacklist Checker (DNSBL/RBL)
Check a mail host or sender IP against DNSBL/RBL lists, separate real listings from resolver warnings, and export evidence for follow-up.
Body Metrics Calculator
Compare BMI, waist ratios, body-fat estimates, lean and fat mass, BSA, and reference weights with risk bands and spread warnings.
Body Surface Area Calculator
Calculate body surface area from height and weight, compare BSA formulas, and check caps, BMI gates, reference lanes, and dose rounding.
Bug Report Generator
Turn bug details into tracker-ready Markdown, triage fields, JSON, and a reproducibility checklist with severity and privacy review notes.
CAA Validation Report
Validate CAA policy for a hostname with CNAME and parent lookups, wildcard checks, issuer findings, DNS evidence, and exportable reports.
CI Failure Log Analyzer
Analyze a failed CI job log, rank line-numbered failure clues, group stages, suggest next checks, and mask secret-like snippets before sharing.
CPS Test
Measure clicks per second in your browser with timed target runs, goal checks, accuracy tracking, consistency scoring, local history, and pace charts.
Capacity Upgrade Brief Report
Build a capacity upgrade brief from utilization growth, threshold timing, lead time, and ranked options with charts and approval-ready notes.
Car Tire Pressure Calculator
Plan cold tire pressure from placard or vehicle presets, loaded weight, axle share, tire width, and temperature drift with add-or-bleed steps.
Center for Epidemiologic Studies Depression (CES-D-20)
Screen past-week depressive symptoms with CES-D-20 scoring, cutoff context, symptom clusters, high-intensity items, and local exports.
Certificate Inventory Expiry Checker
Check certificate inventory expiries from CSV rows in your browser, ranking urgent renewals, owner gaps, manual-renewal risk, and public validity findings.
Certificate Transparency Checker
Check a TLS certificate fingerprint against public CT data, compare issuer and hostname evidence, and spot revocation or reporting clues.
Config Drift Checker
Compare intended and observed config text, spot changed, missing, extra, and priority drift, and build an exportable remediation ledger.
Credit Card Number Validator
Check payment-card test numbers in your browser with Luhn, issuer-length review, batch traces, charts, and PAN-handling cautions.
Current Time
Check your browser's current time as local or UTC, lock one timestamp, and compare ISO, Unix, offset, DST, and day-boundary clues.
Cut Down, Annoyed, Guilty, Eye-opener (CAGE) Assessment
Screen four CAGE alcohol cues, compare 1+, 2+, and 3+ Yes thresholds, and review Eye-opener patterns with follow-up guidance.
DKIM Validation Report
Check a DKIM selector for a signing domain, review TXT publication, key strength, testing flags, and resolver evidence before troubleshooting mail authentication.
DMARC Validation Report
Check a domain's DMARC TXT record, policy tags, alignment modes, report destinations, rollout signals, and control scores using public DNS.
DNS Configuration Report
Audit a domain's public DNS records with resolver snapshots, posture notes, TTL tiers, latency charts, and copyable reports for migration checks.
DNS Delegation Trace Analyzer
Trace a hostname through delegation, aliases, DNSSEC clues, resolver drift, and negative-cache timing before chasing web, mail, or certificate failures.
DNS Denial Proof Report
Build a DNS denial proof for NXDOMAIN or NODATA with resolver evidence, NSEC/NSEC3 checks, retry timing, and validation warnings.
DNS Glue & Delegation Check
Check DNS glue and delegation for a domain, flag risky nameserver address gaps, compare public resolver views, and export repair evidence.
DNS Propagation Checker
Check DNS propagation across public resolvers, compare expected answers, and review TTL, DNSSEC, ECS, latency, and holdout clues.
DNS Record Lookup
Look up DNS records for a domain, host, or IP through Google or Cloudflare DoH with TTL charts, DNSSEC flags, and raw responses.
DNS Wildcard Behavior Check
Check whether a DNS wildcard answers random names, compare public resolver views, and spot branch or cache clues before changing records.
DNSSEC Validator
Validate a domain's DNSSEC setup with trust-chain evidence, signature timing, resolver AD comparison, and exportable pass/fail reports.
DR Runbook Report
Build a disaster recovery runbook from RTO, RPO, owners, dependencies, recovery steps, validation evidence, and readiness gates for review.
Database Migration Risk Checker
Check SQL migration risk before release with static scoring for destructive DDL, blocking indexes, large-table backfills, and rollout notes.
EDNS Client Subnet (ECS) Tester
Check EDNS Client Subnet behavior for a DNS name by comparing hinted and control DoH lookups, echoed cache scope, answer drift, and resolver evidence.
EDNS Options Inspector
Inspect a domain's EDNS OPT behavior through public DoH resolvers with DNSSEC, NSID, ECS, padding, packet sections, and replay evidence.
Email Header Analyzer
Check raw email headers in your browser for relay delays, SPF/DKIM/DMARC alignment, ARC context, sender mismatches, and spoof-risk clues.
Error Budget Burn Rate Calculator
Calculate SLO burn rate from current error ratio and remaining budget, then compare runway, alert windows, and mitigation targets.
Error Budget Calculator
Calculate how much SLO error budget is used from observed traffic, bad events, burn gates, and runway estimates before release review.
Ethernet Frame Efficiency Calculator
Calculate Ethernet frame efficiency from payload size, VLAN tags, and wire-time overhead, with goodput, frame-rate, and target-fit checks.
Fiber Link Budget Calculator
Calculate a fiber link budget from optic power, route loss, connectors, splices, passives, reserve, and overload limits with margin ledgers.
Finland AIS Vessel Tracker
Find Finnish AIS vessel reports by MMSI, IMO, callsign, name, type, or radius, then review identity, motion, signal checks, and maps.
Firewall Deny Log Analyzer
Analyze firewall deny logs in your browser, group blocked source-service paths, and prioritize watched ports with CIDR direction checks.
Firewall Rule Matrix Generator
Turn firewall flow rows into a review matrix with risk scoring, audit findings, object plans, platform handoff notes, and scope heatmaps.
Firewall Rule Review Report
Review firewall rule inventories for stale, broad, expired, ownerless, or privileged access and produce an evidence-backed cleanup queue.
Firewall Shadow Rule Checker
Find shadowed firewall rules in ordered ACL exports, compare full and partial overlaps, flag object warnings, and prioritize cleanup work.
Generalized Anxiety Disorder (GAD-7) Assessment
Score the seven GAD-7 symptom items, check the 10-point screening cue, and compare anxiety burden with daily function impact.
Geriatric Depression Scale (GDS-15) Assessment
Screen older-adult mood with 15 keyed GDS yes-or-no items, boundary-aware cutoffs, item patterns, and exportable follow-up reports.
Git Diff Risk Analyzer
Analyze Git diff summaries before review, scoring churn, sensitive paths, deletions, generated files, and binary rows into a reviewer queue.
Growth Chart Report Generator
Build a pediatric growth report from visit rows with percentiles, BMI, height velocity, screening flags, charts, and follow-up guidance.
Growth Percentile Trend Calculator
Review a child's height, weight, or BMI percentile path across visits, with WHO/CDC context, band-crossing alerts, charts, and follow-up cues.
Growth Screening Flag Checker
Check child growth visits for percentile drift, corrected age, height velocity, adiposity, and family-height flags with triage guidance.
Growth Velocity Calculator
Calculate child growth velocity from height or weight visit rows, compare each interval with age-stage bands, and flag spacing, streak, and drift concerns.
Growth Z-Score Calculator
Check a child's growth z-score from height, weight, or BMI with WHO/CDC chart selection, percentile context, and preterm age correction.
Gzip Compression Checker
Check HTTP compression evidence for a URL or pasted headers, including gzip/Brotli selection, cache variation, and byte-savings risk.
HA Failover Budget Calculator
Calculate a high-availability failover budget from probe cadence, promotion, traffic convergence, client tail, validation, and RTO buffer checks.
HA Pair Role Consistency Checker
Audit HA pair rows in your browser for active/standby drift, VIP mismatches, stale sync, heartbeat gaps, and priority conflicts with clear failover findings.
HTTP Access Latency Log Analyzer
Analyze NGINX, Apache, or ALB access logs in your browser, compare endpoint P95/P99 and 5xx signals, and export SLA findings.
Hash Type Identifier
Identify likely hash formats from pasted values or local text files, with cleanup hints, confidence labels, ambiguity checks, and exportable evidence.
Heatsink Thermal Resistance Calculator
Size a heat sink from power, ambient, junction limit, interface loss, and airflow context with C/W targets, margins, and charts.
Height-for-Age Percentile Calculator
Check a child's height-for-age percentile from age, sex, and length or stature, with z-score, WHO/CDC comparison, and screen margins.
Hostname Naming Standard Checker
Audit hostnames, URLs, and CSV rows for DNS-safe syntax, naming regex drift, lowercase policy, required suffixes, and duplicates.
Hypertext Transfer Protocol (HTTP) Header Checker
Check a live HTTP URL for response headers, redirect drift, cache rules, cookie flags, CORS exposure, and prioritized hardening fixes.
Hypertext Transfer Protocol (HTTP) Redirect Checker
Trace an HTTP redirect chain hop by hop, compare status, security, latency, host handoffs, loop signals, and copy a replayable cURL command.
IP Overlap Checker
Find overlapping IPv4 CIDR ranges, host-bit fixes, duplicate address counts, and merged coverage blocks before routing or peering work.
IP3 and SFDR Calculator
Estimate IP3, IM3 clearance, and SFDR for RF two-tone tests using gain, noise bandwidth, detection margin, and clean-tone limits.
Incident MTTx Metrics Calculator
Calculate incident MTTD, MTTA, MTTC, and MTTR from lifecycle CSV rows, with target breaches, P85 tails, warnings, and stage charts.
Incident Timeline Report
Turn incident notes or CSV rows into a sorted timeline, phase handoff, gap chart, and evidence-aware review report for post-incident cleanup.
Interface Description Standard Checker
Check network interface descriptions from config, CSV, or show-output rows for missing evidence, duplicate text, length limits, and cleanup notes.
Jumbo Frame Savings Calculator
Calculate jumbo-frame packet-rate relief, wire-overhead savings, MTU curve data, and deployment checks from your traffic and path assumptions.
Kessler Psychological Distress Scale (K10) Assessment
Score recent K10 psychological distress with common and Australian bands, high-item flags, factor load charts, exports, and support cues.
Kessler Psychological Distress Scale (K6) Screener
Screen recent psychological distress with six K6 questions, 5+ and 13+ cutoffs, item drivers, charts, and in-browser scoring.
Kubernetes Events Timeline Analyzer
Analyze Kubernetes event output in your browser, grouping Warning reasons, object hot spots, repeat counts, and timeline bursts from kubectl text or JSON.
Liebowitz Social Anxiety Scale (LSAS-SR) Assessment
Assess past-week social anxiety with LSAS-SR fear and avoidance totals, 30/60 screening anchors, profile splits, charts, and browser exports.
Log Sampling Rate Calculator
Calculate a log sampling rate from event volume, event size, storage target, reserves, bursts, and overhead with keep-policy guidance.
MAC Address Details Lookup
Look up a MAC address, normalize EUI-48 and EUI-64 forms, and compare vendor evidence with local flag, privacy, and special-use checks.
MTU MSS Calculator
Calculate TCP MSS from path MTU, encapsulation overhead, IP version, and reserve bytes, then check effective MTU and DF ping size.
MX Record Lookup
Look up MX records for a domain or mailbox, compare resolver views, catch RFC 7505 conflicts, and review host and mail-policy warnings.
Maintenance Window Conflict Checker
Check change schedules for overlapping maintenance windows, blackout hits, owner collisions, and concurrency spikes with review-ready ledgers.
Mid-Parental Target Height Calculator
Estimate a child's mid-parental target height from biological parent heights, compare formula methods, and read the expected family band.
Mood and Stress Screener Comparator
Compare PHQ-9, GAD-7, DASS, Kessler, PSS, and GDS-15 routes by concern, time, safety, and fit before choosing a first screener.
Motorcycle Tire Pressure Calculator
Set cold motorcycle tire pressure for solo, passenger, and luggage rides with front/rear targets, safe windows, temperature drift, and add-or-bleed checks.
MySQL Slow Query Log Analyzer
Analyze MySQL slow query logs in your browser, group repeated SQL shapes, rank slow or scan-heavy queries, and export tuning evidence.
NTP Offset Log Checker
Check NTP and chrony peer rows for offset, jitter, reach, stratum, and source-selection risks, with a peer ledger and offset map.
Nameserver Health Check
Check domain nameserver health with resolver comparison, glue and public-address checks, SOA timer review, DNSSEC clues, and repair steps.
NetFlow Top Talkers Analyzer
Analyze NetFlow or IPFIX rows to rank top talkers, compare byte, packet, and flow shares, flag parser or egress clues, and export evidence.
Network Audit Findings Report
Turn network audit findings into a prioritized register with owner queues, evidence gaps, escalation status, charts, and export-ready brief wording.
Network Throughput Calculator
Estimate network throughput and transfer time from link speed, RTT, packet loss, TCP windows, streams, and packet-rate limits with bottleneck checks.
Noise Figure Cascade Calculator
Calculate RF receiver noise figure from ordered stage gains, passive losses, bandwidth, and SNR targets with Friis terms and sensitivity estimates.
Observability Event Volume Calculator
Estimate retained observability storage from event rate, event size, and retention, then compare compression, replicas, overhead, reserve, and quota.
Observability Ingest Cost Calculator
Estimate monthly observability ingest cost from logs, traces, metrics, collector reduction, indexing, retention, discounts, and growth.
On-call Handover Report
Prepare an on-call handover from incident rows, owners, and escalation notes, then catch hot items, missing actions, and risky async notes.
Online Clock
Check live local, UTC, and world-zone time, compare handoff windows by zone, and copy Unix timestamps or calendar invite text.
Packet Capture Size Calculator
Estimate packet capture storage from link speed, duration, snap length, format overhead, compression, and reserve checks before a run.
Password Strength Calculator
Check a password in your browser, compare login and breach crack-time estimates, flag common patterns, and get safer upgrade guidance.
Patient Health Questionnaire (PHQ-15) Assessment
Score recent PHQ-15 somatic symptoms, see the 0 to 30 burden band, and review top symptom drivers plus body-system patterns for follow-up.
Patient Health Questionnaire (PHQ-9) Assessment
Score a PHQ-9 depression screener, map the 0 to 27 severity band, and flag Item 9, function impact, and symptom drivers for follow-up.
Ping Results Analyzer
Analyze saved ping output for packet loss, RTT spikes, jitter, sequence gaps, and timing charts before writing a network handoff.
Port Exposure Summary Checker
Turn port exposure rows into a prioritized review list, highlighting public high-risk services, missing owners, and host cleanup scope.
Port List Checker
Clean messy port lists in your browser into TCP/UDP target strings, compact ranges, IANA bands, service warnings, and scan-ready outputs.
PostgreSQL EXPLAIN Plan Analyzer
Review PostgreSQL EXPLAIN text, JSON, or XML for high-cost nodes, row-estimate drift, scans, spills, buffers, and tuning clues.
Posttraumatic Stress Disorder Checklist (PCL-5) Assessment
Complete a past-month PCL-5 PTSD checklist, compare 31+ and 33+ screening cut points, and review DSM-5 cluster counts before sharing.
Primary Care PTSD Screen (PC-PTSD-5)
Screen PC-PTSD-5 past-month symptoms after the trauma gate, compare 3+ and 4+ cut points, and review endorsed areas for follow-up.
Projected Adult Height Calculator
Estimate a child's projected adult height from standing height, age, sex, and parent heights, with scenario ranges and family-band checks.
Prometheus Cardinality Cost Calculator
Estimate Prometheus monthly cardinality cost from active series, scrape interval, retention, pricing model, label fan-out, and cleanup savings.
Prometheus Scrape Config Generator
Generate a Prometheus scrape config from target rows, labels, timing, limits, and overrides, then review YAML, ledgers, and audit warnings.
Proxy Server Checker
Check proxy and CDN header evidence from pasted logs or a live request, trace forwarded IP chains, and flag spoofing or trust-hop risks.
QoS Bandwidth Allocation Calculator
Plan QoS class bandwidth from a parent rate, then check reserved Mbps, priority share pressure, burst ceilings, and best-effort headroom.
Queue Buffer Delay Calculator
Estimate queue buffer delay from buffer size and link rate, compare full-queue and busy-period latency, and find target buffer limits.
Queue Worker Capacity Calculator
Size queue workers from arrival rate, throughput, backlog, and drain targets, with utilization headroom, cap warnings, and burn-down charts.
Quick Response (QR) Code Decoder
Decode a QR image in your browser, inspect the recovered payload, and review URL, OTP, Wi-Fi, and scan-trace warnings before you act.
Resolver Policy Difference Comparator
Compare DNS-over-HTTPS resolver answers across open, threat-filtered, and family-filtered profiles to spot policy splits, zero-sinks, and DNSSEC drift.
Reverse DNS (PTR) Checker
Check reverse DNS for an IP or hostname, confirm PTR names resolve forward, compare public resolvers, and spot stale records.
Risk Register Generator
Build a risk register from pasted CSV or text, score inherent and residual exposure, and queue owner, review, and treatment actions.
SAS-Style Anxiety Proxy Assessment
Check recent anxiety patterns with a disclosed SAS-style proxy that scores 20 items into a 25-to-100 index with domain clues and cutoffs.
SLA Availability Calculator
Calculate SLA availability from downtime and maintenance rules, then compare remaining budget, burn rate, breach risk, and period checkpoints.
SNMP Polling Load Calculator
Estimate SNMP polling pressure from devices, OIDs, intervals, retries, SNMPv3 overhead, MTU limits, and poller capacity checks.
SPF Validation Report
Check a domain's SPF TXT record, count DNS lookup risk, trace includes and redirects, and export clear validation notes for mail setup reviews.
SRV / NAPTR Service Discovery Check
Check SRV and NAPTR routes for SIP, SIPS, XMPP, or LDAP, compare public resolver views, and find broken targets or fallback paths.
SSD Endurance (DWPD/TBW) Calculator
Plan SSD endurance from DWPD or TBW, workload writes, reserve, derating, SMART counters, and growth scenarios for replacement timing.
SSL CA Matcher
Match a TLS leaf certificate to a candidate issuer CA, then review signature proof, DN alignment, CA status, expiry risk, and trust score.
SSL Certificate Chain Checker
Check a live host or pasted PEM certificate chain for missing issuers, hostname mismatch, expiry risk, weak crypto, and install-ready PEM.
SSL Checker
Check a public hostname's TLS posture with SSL Labs grades, trust-path gaps, legacy protocol flags, expiry risk, and a prioritized fix queue.
SSL Expiry Checker
Check SSL/TLS certificate expiry from a live host, with renewal timing, SAN coverage, issuer, serial number, and fingerprint evidence.
SSL Matcher (Certificate, CSR, and Key)
Match a TLS certificate to its CSR or RSA private key in your browser with SPKI pins, chain warnings, encrypted-key support, and exports.
SSL OCSP Checker
Check OCSP revocation status for a public TLS host or pasted certificate, with responder timestamps, warnings, and replay evidence.
SWOLF Analyzer
Analyze swim split times and stroke counts into SWOLF trends, drift alerts, lap calls, and charts for comparable pool training sets.
Satcom Status Tracker
Check satellite TLE age, orbit class, readiness, and optional SatNOGS status before relying on a record for link planning or fleet triage.
Satellite Pass Tracker
Forecast satellite passes from a TLE and observer location, then compare elevation, azimuth, timing, charts, and calendar-ready exports.
Secure Shell (SSH) Key Fingerprint Checker
Check an SSH public key in your browser, compare SHA256 or MD5 fingerprints, and review host-key trust signals before saving records.
SemVer Bump Required Checker
Check release notes or commit subjects for the SemVer bump floor, compare a planned version, and flag breaking, feature, fix, and neutral signals.
Sick, Control, One Stone, Fat, Food (SCOFF)
Screen SCOFF eating-disorder concerns with five yes/no cues, a 0-to-5 score, the 2+ cut-point, item pattern notes, and follow-up guidance.
Snapshot Storage Growth Calculator
Estimate snapshot reserve capacity from dataset churn, retention, reduction ratio, and headroom, then compare current reserve gaps and stress cases.
Stack Trace Signature Analyzer
Group pasted stack traces into stable fingerprints, compare frame evidence, and spot recurring failures while keeping trace text in the browser.
Syslog Severity Mix Analyzer
Analyze syslog and application log samples by severity, error+ share, and noisy emitters with PRI, word, and threshold checks.
Syslog Storage Calculator
Size searchable syslog storage from EPS, message size, retention, compression, index overhead, searchable copies, reserve, and disk headroom checks.
TLS Handshake Trace
Trace a live TLS endpoint, check the negotiated protocol and certificate chain, and separate DNS, TCP, and TLS timing problems.
Test Case Generator
Turn a feature workflow into manual, Gherkin, or automation-ready test cases with traceable IDs, boundary coverage, review checks, and exports.
Trace CNAME Alias Chain
Trace a hostname's public CNAME path, compare resolver views, and check terminal A, AAAA, MX, TXT, or CAA answers before a DNS cutover.
Traceroute Hops Analyzer
Analyze pasted traceroute, tracert, or MTR output into hop evidence, latency-step findings, loss checks, charts, and shareable exports.
URL Blacklist Status Lookup
Check a suspicious URL against Safe Browsing, SURBL, and local risk signals, then review scope-aware verdicts and follow-up links.
Uptime Calculator
Calculate uptime budgets from SLA targets, downtime, maintenance policy, and elapsed period with burn pace, target status, charts, and exports.
User-Agent Parser
Parse a User-Agent string or request header into browser, OS, device, bot, token, and Client Hints evidence for support or log review.
VLAN Config Consistency Checker
Check switch VLAN evidence against trunk policy and spot native VLAN drift, missing allowed IDs, inactive VLANs, and VLAN 1 exposure.
VPN Tunnel Capacity Calculator
Estimate VPN tunnel user capacity from line rate, packet overhead, peak demand, gateway caps, and MTU limits with tables and a load curve.
VSWR Return Loss Converter
Convert VSWR, return loss, reflection coefficient, and reflected power into RF mismatch notes with mismatch loss, watt estimates, and review guidance.
WAN Latency Calculator
Estimate WAN round-trip latency from route distance, fiber speed, hops, queues, jitter, and app round trips with target headroom.
WHOIS / RDAP Lookup
Check domain registration data with RDAP-first lookup, WHOIS fallback, renewal timing, status clues, nameservers, contacts, and JSON.
WWN and NAA Identifier Lookup
Lookup WWN and NAA values from SAN paths or logs, normalize the hex, decode NAA family and OUI hints, and flag fragments before use.
Web Server Detector
Check a public URL's visible web server, CDN, or proxy using HTTP headers, redirect hops, confidence scores, and origin-hint clues.
Weight-for-Age Percentile Calculator
Calculate a child's weight-for-age percentile with WHO/CDC references, corrected-age handling, z-score context, alert lanes, and follow-up cues.
Weight-for-Length Percentile Calculator
Calculate weight-for-length percentile from infant weight and length, compare WHO/CDC references, and review z-scores, source fit, and target weights.
What Is My Browser
Identify your current browser, storage, graphics, privacy, and compatibility signals with share-ready support notes and exposure warnings.
What Is My Internet Protocol (IP) Address?
Check your public IP address with IPv4/IPv6 visibility, ASN, reverse DNS, approximate location, and provider agreement clues.
What Is My Screen Resolution
Check screen resolution, viewport size, DPR, breakpoint fit, capture dimensions, and density warnings from your current browser session.