AS3292 — TDC TDC Holding A/S

Network type: residential

AS3292 announces 143 IPv4 prefixes covering 5,186,048 addresses and 4 IPv6 prefixes.

About this network

TDC (TDC), Denmark's incumbent telecom operator, and one of the country's largest networks with several million IPv4 addresses.

What it's used for

• Fixed broadband, mobile and TV services to Danish households and businesses, plus the national backbone that carries them.
• The bulk of this address space lands on residential subscribers, making 3292 a classic "eyeball" network.

Notable

• TDC traces back to 1879 as Denmark's national telephone company. It was split in 2021 into TDC NET (the physical fibre, coax and mobile infrastructure) and Nuuday (the consumer and business brands such as YouSee and Telmore), both under TDC Holding.
• With that scale of address space, TDC is the network most Danish consumer traffic originates from.

Interesting

• The low four-digit AS number reflects how early the Danish incumbent joined the commercial internet, well before the mid-1990s land rush pushed numbers into five digits.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 2.104.0.0/14
• 2.108.0.0/15
• 2.110.0.0/20
• 2.110.16.0/22
• 2.110.32.0/20
• 2.111.0.0/16
• 5.44.136.0/21
• 45.65.84.0/22
• 45.158.208.0/22
• 62.80.203.0/24
• 62.80.205.0/24
• 62.135.128.0/17
• 62.242.0.0/15
• 80.62.0.0/15
• 80.91.128.0/20
• 80.160.0.0/13
• 80.196.0.0/14
• 80.245.100.0/22
• 81.31.80.0/20
• 83.88.0.0/14
• 83.92.0.0/15
• 83.94.0.0/18
• 83.94.96.0/19
• 83.94.128.0/17
• 83.95.0.0/16
• 85.129.0.0/17
• 87.48.0.0/13
• 87.56.32.0/19
• 87.56.128.0/17
• 87.57.0.0/16
• 87.58.32.0/19
• 87.58.160.0/19
• 87.58.224.0/19
• 87.59.0.0/16
• 87.60.0.0/16
• 87.61.0.0/17
• 87.61.128.0/18
• 87.61.224.0/19
• 87.62.0.0/15
• 91.199.190.0/24
• 91.227.177.0/24
• 92.43.176.0/21
• 93.160.0.0/14
• 93.164.0.0/17
• 93.164.160.0/19
• 93.164.192.0/18
• 93.165.0.0/18
• 93.165.96.0/19
• 93.165.128.0/17
• 93.166.0.0/15
• 93.178.128.0/18
• 94.189.0.0/17
• 95.166.64.0/18
• 95.166.128.0/17
• 128.76.0.0/18
• 128.76.128.0/17
• 128.77.128.0/17
• 131.164.0.0/16
• 136.238.207.0/24
• 147.29.150.0/23
• 176.20.0.0/17
• 176.20.224.0/19
• 176.21.0.0/16
• 176.22.0.0/17
• 176.22.160.0/19
• 176.22.192.0/18
• 176.23.0.0/17
• 176.23.160.0/19
• 176.23.192.0/18
• 185.72.36.0/22
• 185.116.8.0/22
• 185.127.48.0/22
• 185.127.99.0/24
• 185.149.231.0/24
• 185.171.196.0/22
• 185.218.80.0/23
• 185.218.82.0/24
• 188.176.0.0/13
• 192.66.25.0/24
• 192.66.33.0/24
• 192.66.36.0/24
• 192.66.38.0/24
• 192.66.103.0/24
• 192.66.104.0/21
• 192.66.112.0/22
• 192.66.175.0/24
• 192.66.180.0/23
• 193.3.130.0/23
• 193.3.140.0/23
• 193.3.142.0/24
• 193.3.224.0/22
• 193.26.218.0/24
• 193.32.65.0/24
• 193.39.139.0/24
• 193.41.12.0/23
• 193.88.0.0/15
• 193.105.30.0/23
• 193.138.115.0/24
• 193.162.48.0/21
• 193.162.75.0/24

and 47 more.

Upstream networks

• AS6939 Hurricane Electric LLC
• AS3257 GTT Communications Inc.
• AS1299 Arelion Sweden AB
• AS3356 Level 3 Parent, LLC
• AS3320 Deutsche Telekom AG
• AS9002 RETN Limited
• AS577 Bell Canada
• AS6453 TATA COMMUNICATIONS (AMERICA) INC
• AS3303 Swisscom (Schweiz) AG
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS42708 Glesys Sweden AB
• AS50304 Blix Solutions AS
• AS3491 PCCW Global (HK) Ltd.
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS6797 GlobalConnect AB
• AS12389 PJSC Rostelecom
• AS1836 green.ch AG
• AS2152 CENIC
• AS33891 Core-Backbone GmbH
• AS2497 Internet Initiative Japan Inc.
• AS4657 StarHub Ltd
• AS37100 SEACOM Limited
• AS293 ESnet
• AS1273 IDDQD-AS
• AS6830 Liberty Global Europe Holding B.V.

Downstream networks

• AS48854 team.blue Denmark A/S
• AS62319 Itm8 A/S
• AS47527 DLX A/S
• AS203953 Hiper A/S
• AS44398 Itm8 A/S
• AS49010 Herning Kommune
• AS24800 BornFiber Service Provider ApS
• AS29156 DXC Technology Danmark A/S
• AS201271 Nordea Bank Abp
• AS204607 JN DATA A/S
• AS15516 DKTV A/S
• AS197317 TDC Brands A/S
• AS201503 Enreach A/S
• AS50323 LEGO System A/S
• AS42697 Netic A/S
• AS31590 Rackhosting.com ApS
• AS49974 Bo data ApS
• AS198631 Region Hovedstaden
• AS201078 ECIT Solutions A/S
• AS206418 Gentofte Kommune
• AS200145 Aarhus Kommune
• AS57736 Holstebro Kommune
• AS204171 TD-K A/S
• AS57030 Itm8 A/S
• AS198944 TN HOSTING ApS

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS3257 GTT Communications Inc.
• AS48854 team.blue Denmark A/S
• AS3356 Level 3 Parent, LLC
• AS1299 Arelion Sweden AB
• AS3320 Deutsche Telekom AG
• AS62319 Itm8 A/S
• AS577 Bell Canada
• AS9002 RETN Limited
• AS3303 Swisscom (Schweiz) AG
• AS6453 TATA COMMUNICATIONS (AMERICA) INC
• AS47527 DLX A/S
• AS203953 Hiper A/S
• AS44398 Itm8 A/S
• AS49010 Herning Kommune
• AS2152 CENIC
• AS293 ESnet
• AS42708 Glesys Sweden AB
• AS4657 StarHub Ltd
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS33891 Core-Backbone GmbH
• AS3491 PCCW Global (HK) Ltd.
• AS1836 green.ch AG
• AS3342 Cibicom A/S

Routing security

• RPKI: 123 valid, 3 invalid and 54 not-found announcements; 138 ROAs.
• ASPA: none published.
• IRR: 94% of announcements registered; 404 route objects.
• Listed in as-sets: AS-ATRATO:AS-PEERS, AS-BBNED-AMSIX1, AS-BSVE:AS-AMSIX-PEERS, AS-BSVE:AS-LINX-PEERS-1, AS-BSVE:AS-LINX-PEERS-2, AS-BT6, AS-CWCUSTEU, AS-FIBERBY-AMSIX-NO-RS, AS-FINECOM-PEERS-AMSIX, AS-FINECOM-PEERS-DECIX, AS-GBLX, AS-GTTCUST6, AS-HKTPEER, AS-LEVEL3-IPV6, AS-MANDA-AMSIX-PEERS-V4, AS-MANDA-AMSIX-PEERS-V6, AS-MANDA-DECIX-PEERS-V4, AS-MANDA-DECIX-PEERS-V6, AS-MANDA-LINX-PEERS-V4, AS-MANDA-LINX-PEERS-V6, AS-NAO-PEERS, AS-NON, AS-RCN-CE-PEERS, AS-RIS-RRC01, AS-RIS-RRC03.

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• LINX LON1 — London, United Kingdom
• AMS-IX Amsterdam — Amsterdam, Netherlands
• Neutral Internet Exchange — Amsterdam, Netherlands
• Equinix Internet Exchange Ashburn — Ashburn, United States
• DE-CIX New York — New York, United States
• Peering.cz — Prague, Czech Republic
• DE-CIX Hamburg — Hamburg, Germany
• Equinix Internet Exchange San Jose (Bay Area) — San Jose, United States
• Equinix Internet Exchange New York — New York, United States
• Equinix Internet Exchange Palo Alto — Palo Alto, United States
• Netnod Sundsvall- Gävle — Sundsvall, Sweden