Longest Match / Organisations

Registered organisation

TDC Holding A/S

Address space registered to TDC Holding A/S, and where it is announced from.

Registered holders come from the bulk whois that RIPE, APNIC and AFRINIC publish. ARIN and LACNIC do not publish theirs, so holders in North and South America are largely missing here.

IPv4 addresses
5,190,528
IPv6 /64s
34,359,738,369
Registered blocks
81
Countries
4

What this tells you

  • Holds 5,190,528 IPv4 addresses and 34,359,738,369 IPv6 /64 networks across 81 registered blocks.
  • Announced by 2 networks, the largest being AS3292 TDC Holding A/S at 99% of the IPv4 space.
  • Its space resolves to 4 countries, mostly Denmark (100% of the IPv4 space).

Networks announcing this space

NetworkIPv4 shareIPv6 share
AS3292 TDC Holding A/S99%100%
Everything else, including space not announced (1 more)1.0%-

Countries this space resolves to

CountryIPv4 shareIPv6 share
Denmark100%100%
Everything else, including space we cannot place (3 more)<0.1%-

Holding a block is a registry fact, not a physical one. The organisation named here is who the block is assigned to, which is often a customer of the network operator announcing it.