AS2603 NORDUnet

Denmark NORDUNET RIPE 10 IPv4 prefixes 2 IPv6 prefixes

IPv4 addresses

9,728

IPv6 /48 networks

524,288

RPKI

10 valid2 no ROA

Peers and downstreams

132

Holder

AS name: NORDUNET
Description: NORDUnet
Organisation: NORDUnet
Abuse contact: abuse@nordu.net
Assigned: 1993-09-29
Registered: 2002-05-07
Record last changed: 2026-09-25 06:44 UTC

109.105.112.0/21 109.105.120.0/22 109.105.96.0/20 185.174.116.0/22 192.36.171.0/24 193.10.252.0/24 193.10.254.0/24 193.10.255.0/24 193.11.3.0/24 194.68.13.0/24

AS224	Uninett UNINETT
AS513	European Organization for Nuclear Research CERN CERN
AS553	Belwue BELWUE
AS680	Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. DFN
AS852	TELUS Communications Inc. ASN852
AS1103	SURF B.V. SURFNET-NL
AS1140	Stichting Internet Domeinregistratie Nederland SIDN
AS1257	Tele2 Sverige AB SWIPNET
AS1273	IDDQD-AS CW
AS1653	Vetenskapsradet / SUNET SUNET
AS1741	Tieteen tietotekniikan keskus Oy FUNETAS CSC
AS1764	Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH NEXTLAYER-AS
AS1828	Unitas Global UNITAS
AS1835	IDDQD-AS FSKNET-DK
AS2027	MilkyWan Association MilkyWan
AS2116	GLOBALCONNECT AS GlobalConnect-AS2116
AS2847	Litnet LITNET
AS3170	VeloxServ Communications Ltd VELOXSERV
AS3214	xTom GmbH XTOM
AS3221	Haridus- ja Teadusministeerium EENet-AS
AS3303	Swisscom (Schweiz) AG SWISSCOM
AS3333	Reseaux IP Europeens Network Coordination Centre (RIPE NCC) RIPE-NCC-AS
AS3399	Obenet AB OBE-NET
AS3741	Dimension Data
AS6204	TMRC GROUP SRL ZET-NET
AS6327	Shaw Communications SHAW
AS6663	Euroweb Romania S.R.L. TTI-NET
AS6667	Elisa Oyj EUNET-FINLAND
AS6730	Sunrise GmbH SUNRISE
AS6894	KDDI Europe Ltd KDDI-EUROPE
AS6910	DIGI ROMANIA S.A. DIGI-BORDER
AS7195	EDGEUNO S.A.S AS7195
AS7575	Australian Academic and Research Network (AARNet) AARNET-AS-AP
AS8220	COLT Technology Services Group Limited COLT
AS8359	MTS PJSC MTS
AS8426	Claranet Limited CLARANET-AS
AS8434	Telenor Sverige AB TELENOR-SE
AS8455	atom86 BV ATOM86-AS
AS8501	Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center PIONIER-AS
AS8529	Zain Omantel International FZ-LLC OMANTEL-AS
AS8674	Netnod AB NETNOD-IX
AS8708	DIGI ROMANIA S.A. DIGI-RO
AS8943	Jump Networks Ltd JUMP
AS8966	EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC Etisalat-AS
AS9009	M247 Europe SRL M247
AS9044	BSE Software GmbH SOLNET
AS9498	BHARTI Airtel Ltd. BBIL-AP
AS9505	Taiwan Internet Gateway TWGATE-AP
AS12389	PJSC Rostelecom ROSTELECOM-AS
AS12552	GlobalConnect AB GlobalConnect-AS12552
AS12859	BIT BV NL-BIT
AS12969	Ljosleidarinn ehf Vodafone_Iceland
AS13194	UAB "Bite Lietuva" BITE
AS13237	euNetworks GmbH LAMBDANET-AS
AS14907	Wikimedia Foundation Inc. WIKIMEDIA
AS15474	Rannsokna- og haskolanet Islands hf. RHNET
AS18106	Viewqwest Pte Ltd VIEWQWEST-SG-AP
AS19151	BroadbandONE, LLC BBO-1
AS20514	Axians AB QBRANCH
AS20562	Broadband Hosting B.V. OPEN-PEERING-AS
AS20932	Services Industriels de Geneve SIG-ST
AS20965	GEANT Vereniging GEANT
AS21700	Neptune Networks, LLC NEPTUNE-NETWORKS
AS24482	SG.GS SGGS-AS-AP
AS25160	Vorboss Limited VORBOSS
AS25220	equada network GmbH GLOBALNOC-AS
AS28917	Fiord Networks, UAB Fiord-AS
AS29140	Hostserver GmbH HOSTSERVER-AS
AS29169	GANDI SAS GANDI-AS
AS30781	Free Pro SAS JAGUAR-AS
AS30844	Liquid Telecommunications Ltd LIQUID-AS
AS31027	GlobalConnect A/S GlobalConnect-AS31027
AS31122	Digiweb ltd DIGIWEB-AS
AS31133	PJSC MegaFon MF-MGSM-AS
AS31500	Global Network Management Inc GNM-AS
AS34288	Kantonsschule Zug AS34288
AS35710	weber.digital GmbH WEBERCLOUD
AS36236	NetActuate, Inc NETACTUATE
AS37271	Workonline Communications(Pty) Ltd
AS39120	Convergenze S.p.A. CONVERGENZE-AS
AS39122	Blacknight Internet Solutions Limited BLACKNIGHT-AS
AS39351	31173 Services AB ESAB-AS
AS39590	NORDUnet NDGF
AS42541	Fiberby ApS FIBERBY
AS48185	team.blue NV team_blue
AS49544	i3D.net B.V i3Dnet
AS49559	A-Systems Sp. z o.o. IPT-1-IX
AS51088	A2B IP B.V. A2B
AS51185	MainStreaming SpA MAINSTREAMING-AS
AS51519	Karabro AB Karabro
AS56911	Warian S.R.L. ASN-WARIAN
AS58057	Securebit AG SECUREBIT
AS58299	Openfactory GmbH OPENFACTORY-AS
AS60171	AFR-IX TELECOM S.A. AFRIX-AS
AS198093	Foreningen for digitala fri- och rattigheter DFRI-AS
AS199524	G-Core Labs S.A. GCORE
AS205206	Netsite A/S Netsite
AS212635	Jurrian van Iersel AS212635

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 86/100

partly	Prefixes covered by valid ROAs 10 of 12 announced prefixes are RPKI valid, 2 have no ROA.	21/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 2 IPv6 prefixes.	15/15
pass	More than one upstream 43 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@nordu.net is published.	15/15
fail	Publishes a geofeed No geofeed found. Without one, location databases have to guess.	0/10
pass	No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger.	10/10
pass	Registry record maintained Last changed 2026-09-25.	5/5

Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.

Show this on your website

HTML

<a href="https://ip-fd.net/asn/2603"><img src="https://ip-fd.net/badge/asn/2603/health.svg" alt="AS2603 network health on IP-FD.net"></a>

Markdown

[![AS2603 network health](https://ip-fd.net/badge/asn/2603/health.svg)](https://ip-fd.net/asn/2603)

Use rpki.svg instead of health.svg for the RPKI badge.

Routing changes

Last 30 days

2026-10-04 14:48 UTC	Neighbour gone	AS29695	upstream
2026-10-04 14:48 UTC	Neighbour gone	AS16086	downstream
2026-10-04 14:48 UTC	Relationship changed	AS6730	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS58299	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS9505	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS9498	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS9044	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS9009	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS8966	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS8943	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS8708	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS8434	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS8359	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS8220	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS7575	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS7195	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS6910	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS6663	upstream to peer
2026-10-04 14:48 UTC	New neighbour	AS6327	peer
2026-10-04 14:48 UTC	Relationship changed	AS6204	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS60171	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS56911	upstream to peer
2026-10-04 14:48 UTC	New neighbour	AS49559	peer
2026-10-04 14:48 UTC	Relationship changed	AS39120	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS3741	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS37271	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS3303	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS31500	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS31133	upstream to peer
2026-10-04 14:48 UTC	New neighbour	AS30844	peer
2026-10-04 14:48 UTC	New neighbour	AS30781	peer
2026-10-04 14:48 UTC	Relationship changed	AS29169	upstream to peer
2026-10-04 14:48 UTC	New neighbour	AS2116	peer
2026-10-04 14:48 UTC	Relationship changed	AS20965	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS20562	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS1764	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS13194	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS1273	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS12552	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS12389	upstream to peer
2026-10-04 14:48 UTC	Relationship changed	AS1103	upstream to peer

WHOIS

aut-num:        AS2603
as-name:        NORDUNET
org:            ORG-NA47-RIPE
admin-c:        NUN6-RIPE
admin-c:        NAC47-RIPE
tech-c:         NTC20-RIPE
tech-c:         NUN6-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         NORDUNET-MNT
created:        2002-05-07T09:38:31Z
last-modified:  2026-09-25T06:44:30Z
source:         RIPE
% 1341 routing policy lines (import/export) not shown

Routing data

Updated just now

Registry record

Fetched just now from RIPE

Prefixes and neighbours come from the RIPE RIS route collectors. Data older than 5 minutes is refreshed when this page is opened.

API

curl -H "X-API-Key: YOUR_KEY" https://ip-fd.net/api/v1/asn/2603

const res = await fetch('https://ip-fd.net/api/v1/asn/2603', {
  headers: { 'X-API-Key': 'YOUR_KEY' }
});
const data = await res.json();
console.log(data);

import requests

r = requests.get('https://ip-fd.net/api/v1/asn/2603', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/2603');
curl_setopt($ch, CURLOPT_HTTPHEADER, ['X-API-Key: YOUR_KEY']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = json_decode(curl_exec($ch), true);
print_r($data);

req, _ := http.NewRequest("GET", "https://ip-fd.net/api/v1/asn/2603", nil)
req.Header.Set("X-API-Key", "YOUR_KEY")
res, err := http.DefaultClient.Do(req)
if err != nil {
    log.Fatal(err)
}
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Works without a key at a lower rate. Get a free key.

AS1267	WIND TRE S.P.A. ASN-WINDTRE
AS1299	Arelion Sweden AB TWELVE99
AS1836	green.ch AG GREEN
AS2497	Internet Initiative Japan Inc. IIJ
AS2516	KDDI CORPORATION KDDI
AS2914	NTT America, Inc. NTT-DATA-2914
AS3491	PCCW Global (HK) Ltd. PCCWG-APAC-HK
AS4230	CLARO S.A. AS4230
AS4635	Hong Kong Internet Exchange--Route Server 1 HKIX-RS1
AS6461	Zayo Bandwidth ZAYO-6461
AS6696	VERIXI SA VERIXI
AS6762	TELECOM ITALIA SPARKLE S.p.A. SEABONE-NET
AS6777	Amsterdam Internet Exchange B.V. AMS-IX-RS
AS6830	Liberty Global Europe Holding B.V. LibertyGlobal
AS6939	Hurricane Electric LLC HURRICANE
AS8218	Zayo Infrastructure France SA NEO-ASN
AS8896	GLOBALCONNECT AS XFIBER-AS
AS9002	RETN Limited RETN-AS
AS11537	Internet2 INTERNET2-RESEARCH-EDU
AS12779	IT.Gate S.p.A. ITGATE
AS13030	Init7 (Switzerland) Ltd. INIT7
AS15412	Flag Telecom UK Limited FLAG-AS
AS20473	The Constant Company, LLC AS-VULTR
AS20764	CJSC RASCOM RASCOM-AS
AS21320	GEANT Vereniging GEANT_IAS_VRF
AS24961	WIIT AG MYLOC-AS
AS25091	IP-Max SA IP-Max
AS28716	Retelit Digital Services S.p.A. RETELIT-AS
AS29075	IELO-LIAZO SERVICES SAS IELO
AS33891	Core-Backbone GmbH CORE-BACKBONE
AS34019	Hivane Association HIVANE
AS34177	Celeste SAS CELESTE-AS
AS34549	meerfarbig GmbH & Co. KG MEER-AS
AS35280	F5 Networks SARL F5
AS37100	SEACOM Limited
AS37468	Angola Cables
AS41327	Fiber Telecom S.p.A. FIBERTELECOM-AS
AS42708	Glesys AB GLESYS
AS48362	Tkswf TKSWF-AS
AS50304	Blix Solutions AS BLIX
AS50629	LWLcom GmbH LWLCOM
AS56655	Gigahost AS GIGAHOST
AS61049	Exascale Ltd EXASCALE

AS42
AS224	Uninett UNINETT
AS1653	Vetenskapsradet / SUNET SUNET
AS1741	Tieteen tietotekniikan keskus Oy FUNETAS CSC
AS1835	IDDQD-AS FSKNET-DK
AS1850	Internet a Islandi hf ISNIC
AS2832	Vetenskapsradet / SUNET AS-SUNET-TESTBED
AS2847	Litnet LITNET
AS3221	Haridus- ja Teadusministeerium EENet-AS
AS3301	Telia Company AB TELIANET-SWEDEN
AS6461	Zayo Bandwidth ZAYO-6461
AS6509	CANARIE Inc CANARIE-NTN
AS8501	Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center PIONIER-AS
AS8674	Netnod AB NETNOD-IX
AS11537	Internet2 INTERNET2-RESEARCH-EDU
AS12969	Ljosleidarinn ehf Vodafone_Iceland
AS12996	Domeneshop AS DOMENESHOP
AS13335	Cloudflare, Inc. CLOUDFLARENET
AS15474	Rannsokna- og haskolanet Islands hf. RHNET
AS20514	Axians AB QBRANCH
AS21320	GEANT Vereniging GEANT_IAS_VRF
AS24743	Snerpa ehf SNERPA-NET
AS25509	Hringidan ehf / Vortex Inc VORTEX-AS
AS29689	Origo ehf ORIGO-AS
AS30818	Advania Island ehf IS-ADVANIA-TRANSIT
AS30880	SpaceDump IT AB SPACEDUMP-AS
AS39590	NORDUnet NDGF
AS39889	DCS-Networks DCS-Networks-AS
AS44275	Opin Kerfi hf OpinKerfi2024
AS47699	Stiftelsen for Internetinfrastruktur BBK-AS
AS47708	Sveriges Radio AB SVERIGES-RADIO
AS48685	Opin Kerfi hf OK-AS
AS51896	Hringdu ehf HRINGDU-AS
AS198093	Foreningen for digitala fri- och rattigheter DFRI-AS