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How Denmark ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to Denmark over time.
The largest autonomous systems registered to Denmark by IPv4 footprint.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS3292DK | TDC TDC Holding A/S | 5.2M | 180 |
| AS9158DK | TELENOR_DANMARK_AS Telenor A/S | 2.5M | 30 |
| AS39642DK | Sinal-AS Sinal A/S | 560.1K | 50 |
| AS31027DK | GlobalConnect-AS31027 GlobalConnect A/S | 384.3K | 147 |
| AS15516DK | DK-DANSKKABELTV DKTV A/S | 341K | 13 |
| AS44869DK | FIBIA-P-S FIBIA P/S | 333.8K | 13 |
| AS3308DK | TELIANET-DENMARK Norlys Telco A/S | 315.1K | 31 |
| AS203953DK | Hiper Hiper A/S | 214K | 14 |
| AS49362DK | DSV DSV A/S | 167.9K | 26 |
| AS47292DK | SENTIA Sentia Denmark A/S | 113.2K | 115 |
Denmark against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
469 autonomous systems registered to Denmark. Click an AS for detail.
| AS | Holder | IPv4 ↓ | IPv6 /48 | Prefixes |
|---|---|---|---|---|
| AS50021DK | PHD-ApS Sentia Denmark A/S | — | — | 0 |
| AS49514DK | TWOFAST-DK 2FAST A/S | — | — | 0 |
| AS51008DK | NUUDAY-IP-CORE-LAB TDC Brands A/S | — | — | 0 |
| AS206079DK | SBSHOSTING MH HOLDING AF 1. JUNI 2009 ApS | — | — | 0 |
| AS34932DK | GlobalConnect-Testlab-DKDE GlobalConnect A/S | — | — | 0 |
| AS43869DK | DK-UM Udenrigsministeriet | — | — | 0 |
| AS203570DK | GIGAHOST Gigahost ApS | — | — | 0 |
| AS5624DK | AS5624 DXC Technology Danmark A/S | — | — | 0 |
| AS6811DK | Verizon Denmark A/S | — | — | 0 |
| AS47715DK | ASPECTNET Valeo ApS | — | — | 0 |
| AS20984DK | PANALPINA-AS DSV A/S | — | — | 0 |
| AS39554DK | Fullrate TDC Brands A/S | — | — | 0 |
| AS45024DK | PARTNERIT-AS Bo data ApS | — | — | 0 |
| AS198275DK | FLUMMER-AS Thomas Flummer | — | 1 | 1 |
| AS205000DK | Aalborg Aalborg kommune | — | — | 0 |
| AS154695DK | NOVONORDISKAS-AS-AP - NOVO NORDISK A/S | — | — | 0 |
| AS43557DK | ASEMNET Sinal A/S | — | — | 0 |
| AS64408DK | VOKER-AS eTarg Media ApS | — | — | 0 |
| AS59469DK | SOLIDO-NETWORKS Sentia Denmark A/S | — | — | 0 |
| AS35033DK | FUJITSU-AS Fujitsu Services A/S | — | — | 0 |
| AS16095DK | JAYNET Sentia Denmark A/S | — | — | 0 |
| AS212354DK | ASPNET Albert Soendergaard Pedersen | — | 1 | 1 |
| AS199135DK | SATCOM1 Satcom1 Airtime Services ApS | — | — | 0 |
| AS43790DK | FL-L2-AS Frode Laursen A/S | — | — | 0 |
| AS57189DK | DK-ETARG-AS eTarg Media ApS | — | — | 0 |
| AS210971DK | FR0ZEN-AS Dennis Beck | — | — | 0 |
| AS199175DK | VICTORP-NET Victor Pahuus Petersen | — | 2 | 2 |
| AS42418DK | team-blue-Denmark team.blue Denmark A/S | — | — | 0 |
| AS196724DK | LYNERO-AS DLX A/S | — | — | 0 |
| AS8322DK | TDC TDC Holding A/S | — | — | 0 |
| AS49630DK | TN-HOSTING TN HOSTING ApS | — | — | 0 |
| AS57735DK | HEF-Fibernet-AS Norlys Telco A/S | — | — | 0 |
| AS216298DK | FINALTO-DK-AS Finalto A/S | — | — | 0 |
| AS204920DK | DK-MVOW Vestas Wind Systems A/S | — | — | 0 |
| AS206139DK | Tvl_Holding_2025_ApS Nordfelt Holding ApS | — | — | 0 |
| AS206901DK | DKDNB-AS Danmarks Nationalbank | — | — | 0 |
| AS212543DK | fsknet-gl Danmarks Tekniske Universitet | — | — | 0 |
| AS15423DK | Maersk A.P. MOLLER - MAERSK A/S | — | — | 0 |
| AS49309DK | AS49309 Aeven A/S | — | — | 0 |
| AS28717DK | GlobalConnect-AS28717 GlobalConnect A/S | — | — | 0 |
| AS35817DK | HERNINGSHOLM-AS Herningsholm Erhvervsskole & Gymnasier S/I | — | — | 0 |
| AS42659DK | AS_WELLTEC WELLTEC A/S | — | — | 0 |
| AS57819DK | ASSISTEMA eTarg Media ApS | — | — | 0 |
| AS199988DK | DANSKELOENSYSTEMER-AS Paychex Europe Denmark ApS | — | — | 0 |
| AS218707DK | GAMRATH Christoffer Gamrath | — | 2 | 2 |
| AS61298DK | NOAHKS-NET Noah Kornelius Svanholm | — | 2 | 2 |
| AS202119DK | MALTHETANKRED Malthe Kragh Tankred | — | 29 | 14 |
| AS211153DK | HAFNIUM-AS Emil Petersen | — | 18 | 3 |
| AS206898DK | INSTANCE-GROUP Oliver Hjort Nielsen | — | — | 0 |
| AS204420DK | DEMANT-AS Oticon A/S | — | — | 0 |