Autonomous System details

AS2603

NORDUnet  ·  nordu.net

Denmark

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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 2 months ago on Nov 23, 2025

IP Ranges

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
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WHOIS Details

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

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

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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
109.105.116.199 ██████████ 2
109.105.110.39 ██████████ 2
192.36.171.213 █████████ 2
109.105.100.183 ██████████ 1
109.105.100.181 ██████████ 1
109.105.110.58 ██████████ 1

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Peers

There are 185 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.
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 Altibox 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
AS37282 Mainone Cable Company
AS3741 Dimension Data
AS37468 Angola Cables
AS37662 West Indian Ocean Cable Company
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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
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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
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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
185.174.117.94 AS2603 NORDUnet 3.12ms from Skanderborg, DK
193.10.252.66 AS2603 NORDUnet 0.41ms from Stockholm, SE
109.105.119.101 AS2603 NORDUnet 0.61ms from Stockholm, SE
2001:948:7:2::162 AS2603 NORDUnet 0.54ms from Stockholm, SE
109.105.109.164 AS2603 NORDUnet 0.45ms from Stockholm, SE
109.105.108.129 AS2603 NORDUnet 0.53ms from Stockholm, SE
109.105.106.12 AS2603 NORDUnet 3.58ms from Skanderborg, DK
109.105.112.236 AS2603 NORDUnet 3.95ms from Skanderborg, DK
109.105.121.53 AS2603 NORDUnet 0.73ms from Stockholm, SE
193.11.3.30 AS2603 NORDUnet 0.46ms from Stockholm, SE
2001:948:1:6::3 AS2603 NORDUnet 0.41ms from Chicago, US
109.105.100.181 AS2603 NORDUnet 3.80ms from Skanderborg, DK
109.105.114.9 AS2603 NORDUnet 0.64ms from Stockholm, SE
109.105.122.1 AS2603 NORDUnet 3.32ms from Skanderborg, DK
2001:948:8:1::1 AS2603 NORDUnet 0.57ms from Frankfurt am Main, DE
109.105.102.98 AS2603 NORDUnet 0.48ms from London, GB
109.105.117.6 AS2603 NORDUnet 2.94ms from Skanderborg, DK
2001:948:3:9::3 AS2603 NORDUnet 0.53ms from London, GB
185.174.118.107 AS2603 NORDUnet 3.73ms from Skanderborg, DK
193.10.254.131 AS2603 NORDUnet 3.20ms from Skanderborg, DK
109.105.99.18 AS2603 NORDUnet 0.43ms from Stockholm, SE
185.174.116.15 AS2603 NORDUnet 3.75ms from Skanderborg, DK
2001:948:0:bad:c0de::28 AS2603 NORDUnet 0.39ms from Chicago, US
2001:948:2:21::2 AS2603 NORDUnet 0.50ms from Ashburn, US
109.105.101.52 AS2603 NORDUnet 0.47ms from Frankfurt am Main, DE

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
18.233.50.27 AS14618 Amazon.com, Inc. 0.54ms from Ashburn, US
104.52.251.11 AS7018 AT&T Enterprises, LLC 9.89ms from Atlanta, US
88.114.220.171 AS719 Elisa Oyj 1.07ms from Helsinki, FI
37.151.37.203 AS9198 JSC Kazakhtelecom 4.67ms from Karagandy, KZ
81.86.85.251 AS13285 TalkTalk Communications Limited 7.84ms from London, GB
23.37.163.75 AS16625 Akamai Technologies, Inc. 0.58ms from Madrid, ES
190.29.3.251 AS13489 UNE EPM TELECOMUNICACIONES S.A. 2.21ms from Medellin, CO
73.30.77.43 AS7922 Comcast Cable Communications, LLC 8.17ms from New York City, US
193.49.150.251 AS2200 Renater 9.24ms from Paris, FR
176.136.233.43 AS5410 Bouygues Telecom SA 2.74ms from Paris, FR
177.149.80.27 AS26615 TIM S/A 5.04ms from Sao Paulo, BR
177.194.122.155 AS28573 Claro NXT Telecomunicacoes Ltda 6.77ms from Sao Paulo, BR
101.235.167.75 AS10036 DLIVE 2.28ms from Seoul, KR
121.165.218.219 AS4766 Korea Telecom 1.38ms from Seoul, KR
180.153.143.107 AS4812 China Telecom (Group) 3.54ms from Shanghai, CN
221.49.103.235 AS17676 SoftBank Corp. 3.40ms from Tokyo, JP
185.97.119.187 AS202468 AbrArvan CDN and IaaS 14.95ms from Yerevan, AM
107.20.155.91 AS14618 Amazon.com, Inc. 0.50ms from Ashburn, US
71.91.103.123 AS20115 Charter Communications LLC 15.96ms from Atlanta, US
68.93.183.219 AS7018 AT&T Enterprises, LLC 12.90ms from Atlanta, US
147.155.210.11 AS2640 Ames Laboratory 15.19ms from Dallas, US
140.211.211.251 AS3701 University of Oregon 13.05ms from Hillsboro, US
86.132.83.27 AS2856 British Telecommunications PLC 1.97ms from London, GB
116.75.1.91 AS17488 Hathway IP Over Cable Internet 9.82ms from Mumbai, IN
67.2.226.203 AS209 CenturyLink Communications, LLC 2.39ms from Salt Lake City, US

Traceroute

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

$
traceroute -a -n -q1 -f5 109.105.108.130
traceroute to 109.105.108.130 (109.105.108.130): 64 hops max, 52 byte packets
5 [] 195.245.240.24 0.585 ms
Measurement taken from IPinfo ProbeNet in Stockholm, SE
On

Related Networks

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.

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