Autonomous System details

AS2603

NORDUnet · nordu.net

Denmark

Crawler

Need more data or want to access it via API or data downloads? Sign up to get free access

AS2603 – NORDUnet

Field	Value
Country	Denmark
Website	nordu.net
Hosted domains	50
IPv4 addresses	9,728
IPv6 addresses	713,053,462,628,379,038,341,895,553,024
ASN type	Education
Registry	ripe
Allocated	24 years ago on May 07, 2002
Updated	8 days ago on Feb 14, 2026

Netblock	Company	Num of IPs
109.105.96.0/20	NORDUnet	4,096
109.105.112.0/21	NORDUnet	2,048
109.105.120.0/22	NORDUnet	1,024
185.174.116.0/22	NORDUnet	1,024
192.36.171.0/24	Services network	256
193.10.252.0/24	NORDUnet Backbone	256
193.10.254.0/24	NORDUnet Backbone	256
193.10.255.0/24	SUNET TUG	256
193.11.3.0/24	New combined NORDUnet/SUNET NOC network	256
194.68.13.0/24	NORDUnet Backbone	256

Netblock	Company
2001:948::/29	NORDUnet
2001:948::/32	NORDUnet

Get this data and more with IPinfo's powerful IP Ranges API - quickly and easily identify company-owned IP ranges.

IP Ranges API

WHOIS Details

Join for free to view WHOIS details ›


                                                ASHandle:       AS2603
                                                OrgID:          AS2603
                                                ASName:         AS2603
                                                ASNumber:       AS2603
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

Get this data and more with IPinfo's WHOIS product - effortless access to POCs, ORGs, and Networks, for actionable intelligence.

IP WHOIS API & Database

Hosted Domains

There are 50 domain names hosted across 15 IP addresses on this ASN.

Join for free to explore hosted domains ›

IP Address	Domain	Domains on this IP
109.105.110.44	█████████	19
109.105.117.8	██████████	13
109.105.110.120	██████████	11
109.105.110.65	█████████	10
109.105.110.39	██████████	2
192.36.171.213	█████████	2
109.105.116.199	██████████	2
109.105.110.58	██████████	1
109.105.100.182	██████████	1
192.36.171.18	██████████	1

Discover all domains hosted on a single IP address with IPinfo's powerful Hosted Domains (Reverse IP) solution.

Useful for Cybersecurity

Hosted Domains API & Database

Peers

There are 184 peers for this ASN.

Peers	Name
AS1103	SURF B.V.
AS11039	The George Washington University
AS1140	Stichting Internet Domeinregistratie Nederland
AS11537	Internet2
AS12389	PJSC Rostelecom
AS12552	GlobalConnect AB
AS1257	Tele2 Sverige AB
AS1267	WIND TRE S.P.A.
AS1273	Vodafone Group PLC
AS12779	IT.Gate S.p.A.
AS12859	BIT BV
AS12969	Vodafone Iceland
AS1299	Arelion Sweden AB
AS12996	Domeneshop AS
AS13030	Init7 (Switzerland) Ltd.
AS13194	Bite IP Network
AS132337	Axclusive
AS13237	euNetworks GmbH
AS13335	Cloudflare, Inc.
AS140627	OneQode
AS14537	Continent 8 LLC
AS14907	Wikimedia Foundation Inc.
AS15169	Google LLC
AS15412	FLAG TELECOM UK LIMITED
AS15474	Rannsokna- og haskolanet Islands hf.
AS15703	TrueServer BV AS number
AS16086	DNA Oyj
AS1653	Vetenskapsradet / SUNET
AS16735	ALGAR TELECOM S/A
AS1741	CSC - Tieteen tietotekniikan keskus Oy
AS1764	Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS18106	Viewqwest Pte Ltd
AS1828	Unitas Global
AS1835	Forskningsnettet - Danish network for Research and Education
AS1836	green.ch AG
AS1850	Internet a Islandi hf
AS19151	BroadbandONE, LLC
AS19754	The Fusion Network, LLC
AS198093	Foreningen for digitala fri- och rattigheter
AS199524	G-Core Labs S.A.
AS2027	MilkyWan Association
AS20473	The Constant Company, LLC
AS20514	Axians AB
AS205206	Netsite A/S
AS20562	Broadband Hosting B.V.
AS20764	CJSC RASCOM
AS20932	Services Industriels de Geneve
AS20965	GEANT Vereniging
AS21320	GEANT Vereniging
AS21700	Neptune Networks, LLC
AS224	SIKT - KUNNSKAPSSEKTORENS TJENESTELEVERANDOR
AS24482	SG.GS
AS24743	Snerpa ehf
AS24961	WIIT AG
AS2497	Internet Initiative Japan Inc.
AS25091	IP-Max SA
AS25160	Vorboss Limited
AS25220	equada network GmbH
AS25369	Hydra Communications Ltd
AS25509	Hringidan ehf / Vortex Inc
AS2832	Vetenskapsradet / SUNET
AS2847	Kauno Technologijos Universitetas
AS28716	Retelit Digital Services S.p.A.
AS28917	Fiord Networks, UAB
AS2907	Research Organization of Information and Systems, National Institute of Informatics
AS29075	IELO Main Network
AS2914	NTT America, Inc.
AS29140	Hostserver GmbH
AS293	ESnet
AS29689	Origo ehf
AS29695	Lyse Tele AS
AS30781	Free Pro SAS
AS30818	Advania Island ehf
AS30844	Liquid Telecommunications Ltd
AS30880	SpaceDump IT AB
AS31027	GlobalConnect A/S
AS31122	Digiweb ltd
AS31133	PJSC MegaFon
AS3170	VeloxServ Communications Ltd
AS3214	xTom GmbH
AS3221	EENet
AS32590	Valve Corporation
AS3301	Telia Company AB
AS3303	Swisscom (Switzerland) Ltd
AS3333	Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
AS33891	Core-Backbone GmbH
AS3399	Obenet AB
AS34019	Hivane Association
AS34177	CELESTE SAS
AS34288	Kantonsschule Zug
AS34549	meerfarbig GmbH & Co. KG
AS3491	PCCW Global, Inc.
AS35280	F5 Networks SARL
AS35710	weber.digital GmbH
AS36236	NetActuate, Inc
AS37100	SEACOM Limited
AS37271	Workonline Communications(Pty) Ltd
AS3741	Dimension Data
AS37468	Angola Cables
AS37662	West Indian Ocean Cable Company

Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.

ASN API & Database

Upstreams

There are 7 upstreams for this ASN.

upstreams	Name
AS1299	Arelion Sweden AB
AS2914	NTT America, Inc.
AS3491	PCCW Global, Inc.
AS6461	Zayo Bandwidth
AS6762	TELECOM ITALIA SPARKLE S.p.A.
AS6830	Liberty Global Europe Holding B.V.
AS6939	Hurricane Electric LLC

Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.

ASN API & Database

Downstreams

There are 15 downstreams for this ASN.

Downstreams	Name
AS15474	Rannsokna- og haskolanet Islands hf.
AS1653	Vetenskapsradet / SUNET
AS1741	CSC - Tieteen tietotekniikan keskus Oy
AS1835	Forskningsnettet - Danish network for Research and Education
AS198093	Foreningen for digitala fri- och rattigheter
AS21320	GEANT Vereniging
AS224	SIKT - KUNNSKAPSSEKTORENS TJENESTELEVERANDOR
AS2832	Vetenskapsradet / SUNET
AS2847	Kauno Technologijos Universitetas
AS3221	EENet
AS39590	NORDUnet
AS6461	Zayo Bandwidth
AS6509	CANARIE Inc
AS8501	Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center
AS8674	Netnod AB

Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.

ASN API & Database

Pingable IPs

47 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
2001:948:feed::	AS2603 NORDUnet	`4.66ms` from Copenhagen, DK
109.105.100.183	AS2603 NORDUnet	`1.63ms` from Copenhagen, DK
2001:948:96::141	AS2603 NORDUnet	`4.49ms` from Copenhagen, DK
109.105.109.67	AS2603 NORDUnet	`0.37ms` from Frankfurt am Main, DE
109.105.108.129	AS2603 NORDUnet	`0.51ms` from Stockholm, SE
109.105.102.98	AS2603 NORDUnet	`0.48ms` from London, GB
109.105.113.13	AS2603 NORDUnet	`0.48ms` from Stockholm, SE
109.105.112.236	AS2603 NORDUnet	`1.84ms` from Copenhagen, DK
109.105.121.53	AS2603 NORDUnet	`0.67ms` from Stockholm, SE
193.10.255.1	AS2603 NORDUnet	`0.93ms` from Stockholm, SE
2001:948:2:29::3	AS2603 NORDUnet	`0.51ms` from Stockholm, SE
2001:948:3:9::3	AS2603 NORDUnet	`0.52ms` from London, GB
109.105.120.65	AS2603 NORDUnet	`0.71ms` from London, GB
2001:948:8:1::1	AS2603 NORDUnet	`0.47ms` from Frankfurt am Main, DE
193.10.252.66	AS2603 NORDUnet	`0.42ms` from Stockholm, SE
109.105.98.142	AS2603 NORDUnet	`0.44ms` from Ashburn, US
2001:948:0:bad:c0de::10	AS2603 NORDUnet	`0.47ms` from Frankfurt am Main, DE
194.68.13.17	AS2603 NORDUnet	`0.66ms` from Stockholm, SE
109.105.114.9	AS2603 NORDUnet	`0.68ms` from Stockholm, SE
2001:948:7:2::165	AS2603 NORDUnet	`0.52ms` from Stockholm, SE
109.105.104.131	AS2603 NORDUnet	`0.52ms` from Stockholm, SE
185.174.117.234	AS2603 NORDUnet	`0.65ms` from Copenhagen, DK
109.105.96.63	AS2603 NORDUnet	`0.41ms` from Stockholm, SE
185.174.116.36	AS2603 NORDUnet	`0.99ms` from Copenhagen, DK
109.105.117.11	AS2603 NORDUnet	`0.56ms` from Copenhagen, DK

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
82.169.98.219	AS1136 KPN B.V.	`1.22ms` from Amsterdam, NL
202.99.66.11	AS4837 CHINA UNICOM China169 Backbone	`5.09ms` from Beijing, CN
198.46.153.11	AS36352 HostPapa	`0.25ms` from Chicago, US
72.107.119.235	AS6167 Verizon Business	`16.14ms` from Chicago, US
24.227.166.251	AS11427 Charter Communications Inc	`6.89ms` from Dallas, US
68.43.93.59	AS7922 Comcast Cable Communications, LLC	`7.62ms` from Flint, US
125.106.249.43	AS4134 CHINANET-BACKBONE	`8.45ms` from Hangzhou, CN
125.133.55.235	AS4766 Korea Telecom	`1.00ms` from Incheon, KR
81.153.199.155	AS2856 British Telecommunications PLC	`4.89ms` from London, GB
69.74.214.251	AS54004 Cablevision Lightpath LLC	`1.84ms` from New York City, US
91.16.224.27	AS3320 Deutsche Telekom AG	`4.12ms` from Nuernberg, DE
164.81.120.43	AS1935 Renater	`12.18ms` from Paris, FR
23.198.158.59	AS16625 Akamai Technologies, Inc.	`0.27ms` from Seattle, US
67.81.119.251	AS6128 Cablevision Systems Corp.	`4.82ms` from Secaucus, US
106.166.151.75	AS2516 KDDI CORPORATION	`9.88ms` from Tokyo, JP
176.126.58.203	AS36040 Google LLC	`3.17ms` from Wrocław, PL
185.15.57.11	AS14907 Wikimedia Foundation Inc.	`1.27ms` from Dallas, US
35.135.166.187	AS20115 Charter Communications LLC	`8.62ms` from Dallas, US
37.24.245.27	AS3209 Vodafone GmbH	`8.46ms` from Frankfurt am Main, DE
210.182.115.251	AS3786 LG DACOM Corporation	`1.85ms` from Incheon, KR
36.79.99.139	AS7713 PT Telekomunikasi Indonesia	`10.46ms` from Jakarta, ID
47.145.237.59	AS5650 Frontier Communications of America, Inc.	`1.79ms` from Los Angeles, US
176.129.111.27	AS5410 Bouygues Telecom SA	`2.52ms` from Marseille, FR
88.214.206.155	AS46636 NatCoWeb Corp.	`0.56ms` from New York City, US
79.241.149.219	AS3320 Deutsche Telekom AG	`2.30ms` from Nuernberg, DE

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

traceroute -a -n -q1 -f5 192.36.171.65

traceroute to 192.36.171.65 (192.36.171.65): 64 hops max, 52 byte packets

5 [AS12552] 185.1.215.80 0.307 ms

6 *

7 [AS2603] 109.105.102.18 0.556 ms

8 [AS2603] 192.36.171.65 0.478 ms

Measurement taken from

IPinfo ProbeNet in Stockholm, SE

On February 16th 2026

Related Networks

AS1835

Forskningsnettet - Danish network for Research and Education

More details

AS198608

Symbion A/S

More details

AS3342

Cibicom A/S

More details

AS41629

DSV A/S

More details

AS50021

Sentia Denmark A/S

More details

AS50457

Itm8 A/S

More details

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS2603 at robtex.

Data built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales