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WHOIS - IP, Domain Lookup - Primary Registrars
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- ARIN (American Registry for Internet Numbers)
- AfriNIC (African Network Information Centre)
- APNIC (Asia Pacific Network Information Centre)
- LACNIC (Latin-American and Caribbean IP Address Registry)
- RIPE (Réseaux IP Européens Network Coordination Centre)
- InterNIC Registry Whois Search
- U.S. Government (.GOV) Domain Registration and Services
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WHOIS - IP, Domain Lookup - Other
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- Top Level Domains (Country Codes) - IANA
- Netcraft Web Site Finder
- EasyDNS easywhois
- BetterWhois.com
- Hexillion AutoWhois
- Network Solutions Whois
- GeekTools Whois Proxy
- Whois Net
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DNS Queries, Checks, Status Info
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- Network-Tools.com
- All Nettools
- SANS InfoSec Tools
- intoDNS (DNS and Email config tests)
- DNSsy (DNS and Email config tests)
- DNSgoodies.com (DNS and IP tools)
- DNSWatch (DNS and IP tools)
- Lookup Server (fwd / rev DNS lookup, etc.)
- WebDNSTools (fwd / rev DNS lookup, etc.)
- SamDNS (fwd / rev DNS lookup, etc.)
- CentralOps NsLookup
- ZoneEdit Forward & Reverse Lookups
- MX Toolbox (MX lookup)
- Squish (DNS traversal checker)
- Whois Ping Port Scanner (misc. tools)
- IPAddressGuide.com
- DKIM Key Check
- Net Tools
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- Note - many of these are poorly coded, overloaded, and at random times, just plain wrong.
They appear not to be checked by their admins for long periods.
Checking DNS on several of these is recommended, ignoring errors on one or two.
In particular, it is common for reverse (PTR) lookups to fail.-
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Geolocation
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- HostIP.info
- Info Sniper
- IPInfoDB
- IP Address Location
- Geobytes IP Address Locator
- MaxMind
- Spider.com
- IPLocationTools
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IP Block Assignments, Routing Info, etc.
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- Internet Assigned Numbers Authority - IANA
- Traceroute.org (List of publicly accessible traceroute sites)
- Robtex (IP & routing info)
- PeeringDB
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Traceroute Sites - Web Access
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- NOC services (New Jersey)
- NetPlex (Hartford, CT)
- ForeThought.Net (Denver, CO)
- Sprint / T-Mobile Looking Glass (multiple US)
- Century Link (multiple worldwide)
- Hurricane Electric (multiple worldwide)
- Cogent Communications (multiple worldwide)
- XO Communications (multiple US)
- Telstra (Canberra, Australia)
- Australian Network Operators Group
- TeliaSonera (Russia)
- MAcomnet (Russia)
- Institute of High Energy Physics (Beijing, China)
- delDSL Internet (India)
- CTNet (Japan)
- CentralOps Traceroute
- Carleton University (Ottawa)
- Tera-Byte.com (Edmonton, Canada)
- Consumer.net (New Jersey)
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Traceroute Sites - Public Telnet Access
(These will launch a local Telnet session)
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- AT&T
- AT&T CERFnet
- Global Crossing
- Hurricane Electric
- Host.net
- Optus (Australia)
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Misc. Info
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- Internet Corporation Assigned Names and Numbers - ICANN
- TCP / UDP Ports - IANA
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Questions, Comments? - Contact:
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