prserv.net
One organisation, resolved across 3 separately-registered clusters
linked by shared operating domain prserv.net — not name similarity, so
genuinely different organisations that share a name are excluded.
Data as of 2026-07-26
3 clusters ·
4,497 netblocks ·
110,506,752 IPv4 addresses ·
394 IPv6 prefixes ·
2 countries
IPv6 ranges (394)
showing the 15 largest allocationsMember clusters
- AT&T Enterprises, LLC US-DE 4,424 netblocks
- AT&T Global Network Services Nederland B.V. NL 139 netblocks
- AT&T Japan K.K. 53 netblocks