TraceRoo

DNS, VoIP, web, email, fax,
subnet, and PCAP tools.

38 tools ready 5 featured tools PCAP browser-local review

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Most-used tools from the last 24 hours.

Available Tools

Use the heart to pin favorites. Click a tool to open it.

What is my IP?

TraceRoo checks the public address your browser is using.

Guide

Public IP Checking route...

ISPWaiting

LocationWaiting

ASNWaiting

IP Lookup

Look up an IP address for rough location, ASN, and network owner.

Guide

Enter an IP and TraceRoo will sniff the route notes.

WHOIS / RDAP

Look up structured registration data for domains, IPs, and ASNs.

Guide

RDAP is structured WHOIS. Some registries respond slower than others.

Reverse DNS

Find PTR hostnames assigned to an IPv4 or IPv6 address.

Guide

Reverse DNS checks PTR records. Not every IP has one.

Bulk Reverse DNS

Paste up to 25 IPs and check PTR records in a small queue.

Runs 3 PTR checks at a time. Extra lines after 25 are skipped.

CNAM Lookup

Check caller name, carrier, line type, and broad number location.

Guide

Note: 5 CNAM or Number Risk lookups per visitor every 24 hours.

CNAM results depend on upstream carrier data and may be missing or stale.

Bulk CNAM Lookup

Paste up to 5 phone numbers and check caller-name data one at a time.

Note: Up to 5 numbers per batch; each row uses the shared 5-lookups-per-visitor 24-hour limit.

Runs 1 lookup at a time and follows the normal daily lookup limit.

Number Risk Check

Review caller name, carrier, and reputation signals for possible spam risk.

Guide

Note: 5 CNAM or Number Risk lookups per visitor every 24 hours.

This summarizes reputation signals. It cannot prove fraud or guarantee how a future call will be labeled.

Fax Test

Send a standard test fax and track the delivery status timeline.

Guide

Note: 10 fax tests per visitor/day, 3 per destination/day, and 100 total site-wide/day.

Provider-neutral fax endpoint test. If fax variables are not configured, TraceRoo runs a dry-run timeline.

Send Me a Fax

Send a fax to +1-470-802-9848 and watch for the received file.

Guide

Click Watch, then send your fax to +1-470-802-9848.

DNS Lookup

Query A, AAAA, CNAME, MX, TXT, NS, SOA, SRV, and CAA records over HTTPS.

Guide

Ask TraceRoo to dig up a DNS record.

Bulk DNS Checker

Paste up to 25 domains or hosts and check one DNS record type.

Runs 3 DNS checks at a time. Extra lines after 25 are skipped.

Bulk HTTP Health

Paste up to 15 URLs or domains and check status, redirects, TLS hint, and response time.

Runs 2 website checks at a time and follows up to 5 redirects per target.

Bulk TLS Certificates

Paste up to 20 hosts and check certificate expiry, issuer, hostname match, and TLS status.

Runs 2 TLS checks at a time. Extra lines after 20 are skipped.

Bulk SPF / DMARC Audit

Paste up to 25 domains and check SPF and DMARC policy status.

Runs 3 DNS policy checks at a time. DKIM is skipped unless a selector is supplied.

Bulk SIP DNS Checker

Paste up to 25 SIP domains and check NAPTR plus UDP, TCP, and TLS SRV records.

Runs 3 SIP DNS checks at a time. Extra lines after 25 are skipped.

PCAP Splitter

Upload a capture, find SIP Call-IDs, and download one signaling PCAP per call.

Runs locally. Exports SIP signaling packets by Call-ID as classic PCAP files.

PCAP Merger

Merge multiple call-leg captures, visualize the combined SIP flow, and download one merged PCAP.

Guide

Runs locally. Best for captures taken from different call legs that need one combined SIP timeline.

DNS Propagation

Compare DNS answers across public resolvers to spot cache drift.

Guide

Check if major resolvers agree on the same DNS answer.

MX Lookup

Show mail exchangers, priorities, and basic delivery warnings for a domain.

Guide

Check the domain's mail route before blaming the mailbox.

SPF / DMARC / DKIM

Check email authentication TXT records. DKIM needs a selector.

Guide

SPF and DMARC are domain-wide. DKIM is checked by selector.

Blacklist Check

Check a public IP or domain against common DNSBL and reputation lists.

Guide

DNSBL results are signals, not final proof of deliverability or caller reputation.

Subnet Calculator

Calculate IPv4 network range, usable hosts, netmask, wildcard, and broadcast.

Guide

IP Subnet Calculator

Calculate IPv4 and IPv6 subnet details including possible network addresses, usable host ranges, subnet mask, wildcard mask, and address counts.

IPv4 Subnet Calculator

Choose a subnet and IP address, then calculate.

IPv6 Subnet Calculator

Choose a prefix length and IPv6 address, then calculate.

VoIP Bandwidth

Estimate bandwidth by codec, packetization interval, and concurrent calls.

Guide

Estimate includes RTP/UDP/IP/Ethernet overhead. Real networks still need headroom.

Ping Test

Run a quick server-side ping for packet loss and latency.

Guide

Ping runs from the TraceRoo server, so results may differ from your local network.

MTR Tool

Run a live multi-hop report for packet loss, average latency, and worst-hop timing.

Guide

MTR runs from the TraceRoo server and compares hop behavior across repeated probes.

Port Checker

Check if a TCP port is reachable from the TraceRoo server.

Guide

Useful for SIP 5060/5061, HTTPS 443, SMTP 25/587, and other TCP services.

HTTP Header Checker

See status code, redirects, server headers, and basic TLS hints for a URL.

Guide

TraceRoo follows up to 5 redirects and shows the final response headers.

SSL / TLS Certificate

Show issuer, expiration, SAN names, days left, and hostname match.

Guide

Helpful for expired certs, wrong hostnames, and TLS negotiation clues.

SIP DNS Checker

Check NAPTR and SIP/SIPS SRV records for VoIP domain routing.

Guide

Looks for NAPTR plus _sip._udp, _sip._tcp, and _sips._tcp SRV records.

MTU / MSS Calculator

Estimate usable MTU and TCP MSS after tunnel or access overhead.

Guide

Use MSS clamping when tunnels shrink the packet path.

DSCP / CoS Converter

Translate DSCP names, decimal values, ToS byte, and 802.1p CoS.

Guide

Common voice marking is EF / DSCP 46 / ToS 184 / CoS 5.

SRTP PCAP Decoder

Locally inspect RTP streams and try SRTP AES-CM decrypt with supplied key material.

Guide

PCAP stays in your browser. Provide SRTP key/salt from SDP, logs, or your SBC/debug source.

PCAP to WAV Extractor

Extract clear RTP G.711 PCMU/PCMA audio from a local packet capture.

Guide

Works with unencrypted RTP. For SRTP, decrypt first with key material.

RTP Health Analyzer

Upload a PCAP and compare RTP streams for packet loss, jitter, gaps, codecs, and direction trouble.

Guide

Best with unencrypted RTP. Compares streams side by side so one-way or bad-audio clues stand out.

SIP Call Flow Analyzer

Review calls, ladder arrows, failures, gaps, and message details from a local PCAP.

Guide

Finds SIP text such as INVITE, REGISTER, BYE, OPTIONS, and SIP/2.0 responses in UDP or TCP captures.

SIP Registration Analyzer

Track REGISTER attempts, auth challenges, Contact/Expires headers, and DNS clues when no registration appears.

Guide

Finds REGISTER flows, 401/407 challenges, auth loops, failed responses, expiration values, contacts, and DNS lookup clues locally.

Fax Image Extractor

Extract recoverable fax image or document payloads from a local PCAP.

Guide

Runs in your browser. Looks for recoverable TIFF, PDF, JPEG, or PNG fax payloads inside a PCAP.

PCAP Redactor

Mask selected IPs, SIP Call-IDs, or call legs before sharing a capture with a customer.

Guide

Upload a capture, select the IPs or call legs to redact, then download a customer-safe copy. Runs locally.

Traceroute Tool

Build traceroute commands, then paste output for hop, timeout, and latency analysis.

Guide

Enter a hostname or IP to generate a command or run traceroute from the TraceRoo server.

Timeouts at one hop can be normal. Trouble starts when loss or high latency continues after that hop.

Toolbox

One active tool at a time. Use the menus to switch checks.

Open the Tool Library or search for a check. Pin tools here, then choose the active tool from the menus.

read before blaming the network

What TraceRoo can and cannot prove

TraceRoo is built for public troubleshooting clues: DNS answers, public path checks, port reachability, certificates, mail records, VoIP media symptoms, fax tests, and packet-capture review. It helps narrow the next check, but it is not a replacement for logs, captures, provider portals, or tests from the affected LAN.

Good for Outside-in checks, quick comparisons, copyable evidence, and explaining results during support work.

Not proof of Private firewall health, customer Wi-Fi, carrier internals, or what a user sees from their own network.

Use results as Troubleshooting leads. Repeat tests, compare directions, and confirm with logs before making changes.

field notes

Middle-hop packet loss that disappears later is usually not your outage.

DNS propagation checks compare resolver caches, not absolute truth from every network.

A clean SIP ladder can still have broken RTP. Signaling and media fail differently.

An open TCP port proves reachability, not that the application behind it is healthy.

quick routes

Popular Tools

Browse tools

DNS Lookup Check A, AAAA, CNAME, MX, TXT, NS, SOA, SRV, and CAA records. MTR Tool Review hop-by-hop packet loss and latency from the TraceRoo server. Port Checker Test whether TCP ports like 443, 5061, 25, and 587 are reachable. Subnet Calculator Calculate CIDR ranges, usable hosts, netmask, wildcard, and broadcast. Email Auth Checker Check SPF, DMARC, and DKIM DNS records for mail authentication. RTP Health Analyzer Analyze PCAP RTP streams for jitter, packet loss, duplicates, and order issues.

field notes

Troubleshooting Guides

Open guide library

DNS Lookup vs Propagation Know when to check one record and when to compare resolver caches. How To Read MTR Spot real packet loss without chasing harmless middle-hop noise. SPF, DMARC, DKIM Understand email authentication, alignment, selectors, and policies. RTP Jitter and Loss Learn how RTP timing and sequence issues affect VoIP call quality. One-Way Audio Trace missing RTP, NAT issues, firewall gaps, and SDP address problems. CIDR Quick Guide Read prefixes, netmasks, usable hosts, wildcard, and broadcast results.