Links

Potaroo.net Geoff Huston site with many interesting IT-related links, for example BGP Routing Table Analysis Reports, CIDR reports, IPv4, IPv6 reports and others.

RobTex.com Robtex Swiss Army Knife Internet Tool - many usefull tools for geathering information about ISP resources. Here you can search for: * rbls (example: 192.168.0.1) checks multiple RBL:s. check if your mailserver is listed in any blacklist * ipnumber (example: 192.168.0.1) checks ipnumber * hostnames (example: host.domain.com) checks dns-info for a specific hostname * domainnames (example: domain.com) checks dns-info for a domain * whois lookup (example: domain.com) checks whois-info for a domain * c-net (example 192.168.0) checks reverse for a c-net * route (example 192.168.0.0/19 checks a specific route * as numbers (example: AS3333 (RIPE-NCC-AS, RIPE Network Coordination Centre)) * bgp announcements (example: AS3333) * as macros (example: as-ams-ix-peers) * rfcnumbers (example: rfc2822) and so on.