TDC Holding A/S
GLEIF verified
Complete entity footprint
5 linked clusters ·
64,281 netblocks ·
13,284,904 IPv4 addresses
This organisation's clusters combined by evidence —
shared GLEIF corporate family
and
shared operating domain tdc.net
— not name similarity, so genuinely different organisations that share a name are excluded.
LEI
529900N96EOVRB114D28
Registered name
TDC Holding A/S
Jurisdiction
Ultimate parent
DKT Holdings ApS
529900DQKWXN4TVCYP11
Cluster stats
| Netblocks | 300 · 10,426,437 IPv4 addresses |
| Registered in | Denmark (255) · Finland (30) · Russia (3) · Sweden (3) · United States (3) · Netherlands (1) |
| Cluster ID | 208786645 |
| Registry | BGP |
| Owner jurisdiction | DK |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI 529900N96EOVRB114D28 |
| Shared handles | clustered on 34 shared RIR contact/maintainer handles |
| Registry names | 22 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
Footprint over time
5 weekly snapshots · JSON
347
-2 netblocks since 2026-07-05
2026-07-05
peak 349
2026-07-19
IP Ranges (300)
showing 50 of 300 — see all — ⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 2.21.28.0/22 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 2.104.0.0/14 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 2.108.0.0/15 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 2.110.0.0/20 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 2.110.16.0/22 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 2.110.32.0/20 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 2.111.0.0/16 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 5.44.136.0/21 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 5.44.136.0/24 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 45.65.84.0/22 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 62.80.203.0/24 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 62.80.205.0/24 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 62.135.128.0/17 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 62.242.0.0/15 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 80.62.0.0/15 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 80.91.128.0/20 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 80.160.0.0/13 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 80.196.0.0/14 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 80.245.100.0/22 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 81.31.80.0/20 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 83.88.0.0/14 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 83.92.0.0/15 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 83.94.0.0/18 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 83.94.96.0/19 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 83.94.128.0/17 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 83.95.0.0/16 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 85.129.0.0/17 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 87.48.0.0/13 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 87.56.32.0/19 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 87.56.128.0/17 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 87.57.0.0/16 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 87.58.32.0/19 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 87.58.160.0/19 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 87.58.224.0/19 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 87.59.0.0/16 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 87.60.0.0/16 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 87.61.0.0/17 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 87.61.128.0/18 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 87.61.224.0/19 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 87.62.0.0/15 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 87.104.224.0/21 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 87.104.232.0/24 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 91.199.190.0/24 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 91.227.177.0/24 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 92.43.176.0/21 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 93.160.0.0/14 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 93.164.0.0/17 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 93.164.160.0/19 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 93.164.192.0/18 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
| 93.165.0.0/18 | TDC Holding A/S | BGP | ANNOUNCED | ● medium |
Domains hosted in this network
what's this?Customer-delegated space
how is this classified?Corporate group (3 confirmed entities)
+10,393 additional unconfirmed candidates not shown — full list (JSON)- TELEDANMARK 372 blocks
- TDC A/S 227 blocks
Network trust
what's this?
RPKI hygiene: C
how networks compare →
65.0%
of checked blocks have valid RPKI ROA coverage
(195 of 300)
Possible discrepancies (1)
These blocks are registered to TDC Holding A/S but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 62.236.79.0/24 /24 | authorized for AS16086 — DNA Oyj |
NIC Handles
AKAM1-RIPE-MNT
AS31027-MNT
AS3257-IPAM-MNT
AS3292
AS3292-MNT
AS3292-MNT
CSCDK-MNT
DGCSYSTEMS-MNT
DK-EKMNT
DUMY-RIPE
DUMY-RIPE
EUROCONNECT
+22 more