| Link | Description |
| Google UK | Functional search engine |
| Nominet UK | Domain info for .uk TLD |
| Internic whois | Domain info for .aero .arpa .biz .cat .com .coop .edu .info .int .jobs .mobi .museum .name .net .org .pro .travel TLDs |
| RIPE | IP information on all european IPs. |
| IP Tools | Search information about IPs and networks |
| DNS Report | Online DNS report |
| BGPlay | Visual BGP tool |
