TDC Holding A/S

TDC A/S
Data as of 2026-09-20
GLEIF verified
Complete entity footprint
5 linked clusters · 902 netblocks · 5,496,331 IPv4 addresses · 43 IPv6 prefixes
This organisation's clusters combined by evidence — shared GLEIF corporate family — not name similarity, so genuinely different organisations that share a name are excluded.
View the full entity page →
LEI
529900N96EOVRB114D28
Registered name
TDC Holding A/S
Jurisdiction
DK
Ultimate parent
DKT Holdings ApS
529900DQKWXN4TVCYP11
This organisation
Netblocks228 · 17,343 IPv4 addresses
IPv6 36 prefixes (largest 2401:a60::/32)
Registered in Norway (63) · Sweden (45) · Finland (31) · Denmark (29) · Germany (6) · United States (5)
Record ID240812629
RegistryAFRINIC
Owner jurisdictionDK
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 529900N96EOVRB114D28
Shared handles clustered on 23 shared RIR contact/maintainer handles
Registry names 12 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (228)

⬇ export CSV
CIDR Org name Registry Status Confidence
41.194.20.160/27 TDC AFRINIC ASSIGNED PA ● high
41.194.24.96/27 TDC AFRINIC ASSIGNED PA ● high
41.194.24.128/26 TDC AFRINIC ASSIGNED PA ● high
80.81.192.16/32 TDC A/S PEERINGDB ASSIGNED ● high
80.249.208.104/32 TDC A/S PEERINGDB ASSIGNED ● high
185.0.4.6/32 TDC A/S PEERINGDB ASSIGNED ● high
185.0.5.8/32 TDC A/S PEERINGDB ASSIGNED ● high
185.0.7.6/32 TDC A/S PEERINGDB ASSIGNED ● high
185.0.8.6/32 TDC A/S PEERINGDB ASSIGNED ● high
185.0.20.197/32 TDC A/S PEERINGDB ASSIGNED ● high
185.0.43.26/32 TDC A/S PEERINGDB ASSIGNED ● high
185.1.210.18/32 TDC A/S PEERINGDB ASSIGNED ● high
192.130.74.76/30 TDC NET AS RIPE ASSIGNED PA ● high
193.239.117.228/32 TDC A/S PEERINGDB ASSIGNED ● high
194.68.123.41/32 TDC A/S PEERINGDB ASSIGNED ● high
194.68.128.41/32 TDC A/S PEERINGDB ASSIGNED ● high
195.66.224.64/32 TDC A/S PEERINGDB ASSIGNED ● high
195.69.119.41/32 TDC A/S PEERINGDB ASSIGNED ● high
195.245.240.41/32 TDC A/S PEERINGDB ASSIGNED ● high
198.32.118.51/32 TDC A/S PEERINGDB ASSIGNED ● high
198.32.176.101/32 TDC A/S PEERINGDB ASSIGNED ● high
206.82.104.6/32 TDC A/S PEERINGDB ASSIGNED ● high
206.126.236.59/32 TDC A/S PEERINGDB ASSIGNED ● high
206.223.116.244/32 TDC A/S PEERINGDB ASSIGNED ● high
212.237.192.41/32 TDC A/S PEERINGDB ASSIGNED ● high
212.237.193.41/32 TDC A/S PEERINGDB ASSIGNED ● high
2001:504:0:1::3292:1/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:504:0:2::3292:1/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:504:d::65/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:504:f::33/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:504:36::cdc:0:1/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8::cdc:0:1/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8:1::a500:3292:1/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8:4::cdc:1/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8:d:fb::41/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8:d:fc::41/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8:d:fe::41/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8:d:ff::41/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8:d:202::41/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8:d:203::41/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8:13::a500:3292:1/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8:3d::cdc:0:1/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8:7f::197/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8:115:1::1:26/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8:139::cdc:0:1/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8:13a::cdc:0:1/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8:13c::cdc:0:1/128 TDC A/S PEERINGDB ASSIGNED ● high
2001:7f8:13e::cdc:0:1/128 TDC A/S PEERINGDB ASSIGNED ● high
2.109.32.0/22 TDC-HOSTING-NET RIPE ASSIGNED PA ● low
31.15.41.144/30 TDC-NET RIPE ASSIGNED PA ● low
31.15.49.192/28 TDC-HOSTING-NET RIPE ASSIGNED PA ● low
31.15.60.44/30 TDC-HOSTING-NET RIPE ASSIGNED PA ● low
31.15.60.64/30 TDC-HOSTING-NET RIPE ASSIGNED PA ● low
62.73.195.120/29 TDC-NET RIPE ASSIGNED PA ● low
62.73.195.136/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
62.73.195.232/29 TDC-NET RIPE ASSIGNED PA ● low
62.73.195.240/28 TDC-NET RIPE ASSIGNED PA ● low
62.73.200.224/28 TDC-NET RIPE ASSIGNED PA ● low
62.242.207.160/29 TDC-NET RIPE ASSIGNED PA ● low
80.167.239.120/29 TDC-NET RIPE ASSIGNED PA ● low
80.232.10.56/29 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.19.96/28 TDC-NET RIPE ASSIGNED PA ● low
80.232.41.72/29 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.41.80/29 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.41.112/29 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.41.120/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.41.128/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.41.132/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.41.140/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.41.144/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.41.148/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.41.152/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.41.156/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.41.160/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.41.164/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.41.168/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.41.172/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.76.176/29 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
80.232.111.140/30 TDC-AS-NET RIPE ASSIGNED PA ● low
85.19.75.80/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
85.19.77.64/28 TDC-AS-NET RIPE ASSIGNED PA ● low
85.19.84.192/29 TDC-NET RIPE ASSIGNED PA ● low
85.19.118.57/32 TDC-NET RIPE ASSIGNED PA ● low
85.19.118.240/28 TDC-NET RIPE ASSIGNED PA ● low
85.19.134.0/24 TDC-NET RIPE ASSIGNED PA ● low
85.19.140.0/27 TDC-NET RIPE ASSIGNED PA ● low
85.19.199.72/29 TDC-AS-NET RIPE ASSIGNED PA ● low
85.19.202.50/31 TDC-AS-NET RIPE ASSIGNED PA ● low
85.19.202.96/29 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
85.19.209.96/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
85.19.210.240/28 TDC-AS-NET RIPE ASSIGNED PA ● low
85.19.213.184/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
85.19.216.56/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
85.19.220.112/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
87.48.152.0/22 TDC-HOSTING RIPE ASSIGNED PA ● low
88.131.2.32/30 TDC-HOSTING-NET RIPE ASSIGNED PA ● low
88.131.2.96/30 TDC-AS-NET RIPE ASSIGNED PA ● low
88.131.2.208/30 TDC-AS-NET RIPE ASSIGNED PA ● low
88.131.54.200/29 TDC-NET RIPE ASSIGNED PA ● low
88.131.60.200/29 TDC-HOSTING-NET RIPE ASSIGNED PA ● low
88.131.62.8/29 TDC-HOSTING-NET RIPE ASSIGNED PA ● low
88.131.158.32/28 TDC-SE-NET RIPE ASSIGNED PA ● low
88.131.158.64/27 TDC-SE-NET RIPE ASSIGNED PA ● low
88.131.198.128/27 TDC-SE-NET RIPE ASSIGNED PA ● low
88.131.241.0/24 TDC-SE-NET RIPE ASSIGNED PA ● low
88.131.252.0/24 TDC-SE-NET RIPE ASSIGNED PA ● low
93.124.250.224/27 TDC-NET RIPE ASSIGNED PA ● low
93.167.188.0/23 TDC-HOSTING RIPE ASSIGNED PA ● low
103.65.206.0/23 TDC APNIC ALLOCATED PORTABLE ● low
103.220.218.0/23 TDC APNIC ALLOCATED PORTABLE ● low
192.89.10.88/29 TDC-NET RIPE ASSIGNED PA ● low
192.89.24.112/30 TDC-NET RIPE ASSIGNED PA ● low
192.89.67.116/30 TDC-NET RIPE ASSIGNED PA ● low
192.89.127.72/30 TDC-NET RIPE ASSIGNED PA ● low
192.89.213.84/30 TDC-NET RIPE ASSIGNED PA ● low
192.130.74.244/30 TDC-NET RIPE ASSIGNED PA ● low
192.130.76.0/30 TDC-NET RIPE ASSIGNED PA ● low
192.194.116.64/30 TDC-NET RIPE ASSIGNED PA ● low
193.3.144.0/21 TDC RIPE ASSIGNED PA ● low
193.88.5.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
193.88.10.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
193.88.32.0/22 TDC-HOSTING RIPE ASSIGNED PA ● low
193.88.70.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
193.88.71.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
193.88.186.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
193.88.187.64 – 193.88.187.255 TDC-HOSTING RIPE ASSIGNED PA ● low
193.209.96.124/30 TDC-NET RIPE ASSIGNED PA ● low
193.210.149.80/30 TDC-NET RIPE ASSIGNED PA ● low
193.210.149.224/30 TDC-NET RIPE ASSIGNED PA ● low
193.210.149.240/30 TDC-NET RIPE ASSIGNED PA ● low
193.210.150.84/30 TDC-NET RIPE ASSIGNED PA ● low
193.211.16.24/30 TDC-NET RIPE ASSIGNED PA ● low
193.211.16.64/30 TDC-NET RIPE ASSIGNED PA ● low
193.211.16.80/30 TDC-NET RIPE ASSIGNED PA ● low
194.111.112.236/30 TDC-NET RIPE ASSIGNED PA ● low
194.111.113.48/29 TDC-NET RIPE ASSIGNED PA ● low
194.111.197.232/29 TDC-NET RIPE ASSIGNED PA ● low
194.137.48.24/30 TDC-NET RIPE ASSIGNED PA ● low
194.137.84.216/30 TDC-NET RIPE ASSIGNED PA ● low
194.137.153.196/30 TDC-NET RIPE ASSIGNED PA ● low
194.142.138.128/29 TDC-NET RIPE ASSIGNED PA ● low
194.142.146.192/30 TDC-NET RIPE ASSIGNED PA ● low
194.192.15.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
194.192.81.0 – 194.192.82.255 TDC-HOSTING RIPE ASSIGNED PA ● low
194.192.112.192/26 TDC-HOSTING RIPE ASSIGNED PA ● low
194.192.186.0/23 TDC-HOSTING RIPE ASSIGNED PA ● low
194.192.188.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
194.192.199.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
195.22.64.208/28 TDC-SE-NET RIPE ASSIGNED PA ● low
195.22.84.160/27 TDC-SE-NET RIPE ASSIGNED PA ● low
195.42.193.0/24 TDC-HOSTING-NET RIPE ASSIGNED PA ● low
195.70.177.36/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
195.141.51.208/28 TDC-NET RIPE ASSIGNED PA ● low
195.141.51.224/28 TDC-NET RIPE ASSIGNED PA ● low
195.141.51.240/28 TDC-NET RIPE ASSIGNED PA ● low
195.215.4.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
195.215.5.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
195.215.6.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
195.215.7.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
195.215.8.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
195.215.9.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
195.215.12.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
195.215.13.0 – 195.215.14.255 TDC-HOSTING RIPE ASSIGNED PA ● low
195.215.15.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
195.215.35.0/24 TDC-HOSTING RIPE ASSIGNED PA ● low
212.20.194.0/26 TDC-NET RIPE ASSIGNED PA ● low
212.20.195.80/28 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
212.37.254.16/29 TDC-AS-NET RIPE ASSIGNED PA ● low
212.37.254.216/29 TDC-AS-NET RIPE ASSIGNED PA ● low
212.125.198.184/30 TDC-NET RIPE ASSIGNED PA ● low
212.125.199.128/28 TDC-NET RIPE ASSIGNED PA ● low
212.125.203.208/29 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
212.125.222.12/30 TDC-NET RIPE ASSIGNED PA ● low
212.182.213.52/30 TDC-NET RIPE ASSIGNED PA ● low
212.213.87.64/29 TDC-NET RIPE ASSIGNED PA ● low
212.213.87.72/29 TDC-NET RIPE ASSIGNED PA ● low
212.213.111.32/28 TDC-NET RIPE ASSIGNED PA ● low
212.213.111.96/29 TDC-NET RIPE ASSIGNED PA ● low
212.214.0.40/31 TDC-SE-NET RIPE ASSIGNED PA ● low
212.214.0.148/30 TDC-SE-NET RIPE ASSIGNED PA ● low
212.214.0.152/30 TDC-SE-NET RIPE ASSIGNED PA ● low
212.214.11.176/29 TDC-SE-NET RIPE ASSIGNED PA ● low
212.214.11.184/29 TDC-SE-NET RIPE ASSIGNED PA ● low
212.214.40.32/27 TDC-NET RIPE ASSIGNED PA ● low
213.50.3.48/29 TDC-HOSTING-NET RIPE ASSIGNED PA ● low
213.50.9.64/29 TDC-SE-NET RIPE ASSIGNED PA ● low
213.50.12.0/23 TDC-SE-NET RIPE ASSIGNED PA ● low
213.50.15.0/24 TDC-SE-NET RIPE ASSIGNED PA ● low
213.50.75.160/28 TDC-SE-NET RIPE ASSIGNED PA ● low
213.50.162.0/23 TDC-SE-NET RIPE ASSIGNED PA ● low
213.50.192.0/24 TDC-SE-NET RIPE ASSIGNED PA ● low
213.88.135.152/29 TDC-SE-NET RIPE ASSIGNED PA ● low
213.88.172.164/30 TDC-SE-NET RIPE ASSIGNED PA ● low
213.88.186.0/28 TDC-SE-NET RIPE ASSIGNED PA ● low
213.88.192.120/29 TDC-SE-NET RIPE ASSIGNED PA ● low
213.88.204.64/29 TDC-SE-NET RIPE ASSIGNED PA ● low
213.88.204.80/29 TDC-SE-NET RIPE ASSIGNED PA ● low
213.173.135.16/28 TDC-NET RIPE ASSIGNED PA ● low
213.188.28.184/29 TDC-AS-NET RIPE ASSIGNED PA ● low
213.212.43.52/30 TDC_NET_AS RIPE ASSIGNED PA ● low
213.236.144.128/26 TDC-AS-NET RIPE ASSIGNED PA ● low
213.236.163.0/24 TDC-NET RIPE ASSIGNED PA ● low
213.236.173.128/25 TDC-AS-NET RIPE ASSIGNED PA ● low
213.236.203.144/28 TDC-NET RIPE ASSIGNED PA ● low
213.236.203.160/29 TDC-NET RIPE ASSIGNED PA ● low
213.236.203.176/28 TDC-NET RIPE ASSIGNED PA ● low
213.236.204.224/29 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
213.236.205.120/29 TDC-NET RIPE ASSIGNED PA ● low
213.236.207.40/29 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
213.236.220.96/28 TDC-NET RIPE ASSIGNED PA ● low
213.236.224.248/30 TDC-NET-AS-NET RIPE ASSIGNED PA ● low
213.236.250.32/30 TDC-AS-NET RIPE ASSIGNED PA ● low
217.68.113.176/30 TDC-NET RIPE ASSIGNED PA ● low
217.119.165.0/24 TDC-HOSTING-NET RIPE ASSIGNED PA ● low
2001:6e8:1b01::/48 TDC-NET RIPE ASSIGNED ● low
2401:a60::/32 TDC APNIC ALLOCATED PORTABLE ● low
2a02:228:1::/48 TDC-AS-NET RIPE ASSIGNED ● low
2a02:228:2::/48 TDC-AS-NET RIPE ASSIGNED ● low
2a02:228:100::/48 TDC-AS-NET RIPE ASSIGNED ● low
2a02:228:101::/48 TDC-AS-NET RIPE ASSIGNED ● low
2a02:228:111::/48 TDC-NET RIPE ASSIGNED ● low
2a02:228:228::/48 TDC-NET RIPE ASSIGNED ● low
2a02:228:1c04::/48 TDC-AS-NET RIPE ASSIGNED ● low
2a02:228:1c05::/48 TDC-AS-NET RIPE ASSIGNED ● low
2a02:228:1c09::/48 TDC-NET-AS-NET RIPE ASSIGNED ● low
2a02:228:1c14::/48 TDC-NET RIPE ASSIGNED ● low
2a02:228:1c23::/48 TDC-NET-AS-NET RIPE ASSIGNED ● low
2a02:228:1c26::/48 TDC-NET-AS-NET RIPE ASSIGNED ● low

IPv6 ranges (36)

CIDR
2401:a60::/32
2001:6e8:1b01::/48
2a02:228:100::/48
2a02:228:101::/48
2a02:228:111::/48
2a02:228:1::/48
2a02:228:1c04::/48
2a02:228:1c05::/48
2a02:228:1c09::/48
2a02:228:1c14::/48
2a02:228:1c23::/48
2a02:228:1c26::/48
2a02:228:228::/48
2a02:228:2::/48
2001:504:0:1::3292:1/128
2001:504:0:2::3292:1/128
2001:504:36::cdc:0:1/128
2001:504:d::65/128
2001:504:f::33/128
2001:7f8:115:1::1:26/128
2001:7f8:139::cdc:0:1/128
2001:7f8:13::a500:3292:1/128
2001:7f8:13a::cdc:0:1/128
2001:7f8:13c::cdc:0:1/128
2001:7f8:13e::cdc:0:1/128
2001:7f8:1::a500:3292:1/128
2001:7f8:3d::cdc:0:1/128
2001:7f8:4::cdc:1/128
2001:7f8:7f::197/128
2001:7f8::cdc:0:1/128
2001:7f8:d:202::41/128
2001:7f8:d:203::41/128
2001:7f8:d:fb::41/128
2001:7f8:d:fc::41/128
2001:7f8:d:fe::41/128
2001:7f8:d:ff::41/128

Footprint over time

13 weekly snapshots · JSON
228 +1 netblocks since 2026-07-05
2026-07-05 peak 228 2026-09-20

Customer-delegated space

how is this classified?
Unclassified 184 (80.7%)
Operator infrastructure (named) 44 (19.3%)

Corporate group (5 confirmed entities)

+10,391 additional unconfirmed candidates not shown — full list (JSON)

Network trust

what's this?
RPKI hygiene: B how networks compare →
93.9% of checked blocks have valid RPKI ROA coverage (214 of 228)
Possible discrepancies (25)

These blocks are registered to TDC A/S but cryptographically authorized for a different, unrelated network (4 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

2401:a60::/32 /32 authorized for AS18041 — Taiwan Digital Streaming Co.
2a02:228:1::/48 /48 authorized for AS25400 — Telia Norge AS
2a02:228:2::/48 /48 authorized for AS25400 — Telia Norge AS
2a02:228:100::/48 /48 authorized for AS25400 — Telia Norge AS
2a02:228:101::/48 /48 authorized for AS25400 — Telia Norge AS
2a02:228:111::/48 /48 authorized for AS25400 — Telia Norge AS
2a02:228:228::/48 /48 authorized for AS25400 — Telia Norge AS
2001:6e8:1b01::/48 /48 authorized for AS16086 — DNA Oyj
2a02:228:1c14::/48 /48 authorized for AS25400 — Telia Norge AS
2a02:228:1c04::/48 /48 authorized for AS25400 — Telia Norge AS
2a02:228:1c05::/48 /48 authorized for AS25400 — Telia Norge AS
2a02:228:1c09::/48 /48 authorized for AS25400 — Telia Norge AS
2a02:228:1c23::/48 /48 authorized for AS25400 — Telia Norge AS
2a02:228:1c26::/48 /48 authorized for AS25400 — Telia Norge AS
213.50.162.0/23 /23 authorized for AS1257 — Tele2 Sverige AB
+10 more — see the REST API

NIC Handles

AS22351-MNT AS3292 AS3292-MNT AS6730-MNT DATANET-NOC DKNET-MNT DUMY-RIPE DUMY-RIPE FI2G-MNT IP-ONLY-MNT JS4517-AP LY4162-AP +11 more