AS1103 — SURFNET-NL SURF B.V.

AS1103 announces 137 IPv4 prefixes covering 7,194,079 addresses and 13 IPv6 prefixes.

About this network

The Netherlands' national research and education network (SURFNET-NL), operated by SURF and based in Utrecht.

What it's used for

• High-capacity backbone connecting Dutch universities, colleges, research institutes, and academic hospitals to each other and to the global research internet.

Notable

• A national research and education network (NREN), not a commercial ISP. It announces a large amount of IPv4 space on behalf of the Dutch academic community.

Interesting

• SURFnet is one of the pioneering European NRENs, which is reflected in its low AS number.

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

Announced prefixes

• 129.125.0.0/16
• 130.37.0.0/16
• 131.174.0.0/16
• 131.211.0.0/16
• 131.224.0.0/16
• 132.229.0.0/16
• 134.221.0.0/16
• 136.231.0.0/16
• 137.56.0.0/16
• 137.120.0.0/16
• 137.224.0.0/16
• 139.63.0.0/16
• 141.252.0.0/16
• 143.121.0.0/16
• 145.0.0.0/16
• 145.1.0.0/17
• 145.2.0.0/15
• 145.5.0.0/16
• 145.9.0.0/16
• 145.19.0.0/16
• 145.20.0.0/16
• 145.23.0.0/16
• 145.24.0.0/16
• 145.28.0.0/15
• 145.33.0.0/16
• 145.37.0.0/16
• 145.38.0.0/15
• 145.41.0.0/16
• 145.44.0.0/16
• 145.48.0.0/15
• 145.51.0.0/16
• 145.52.0.0/16
• 145.74.0.0/15
• 145.76.0.0/16
• 145.81.0.0/16
• 145.85.0.0/16
• 145.88.0.0/14
• 145.92.0.0/15
• 145.95.0.0/16
• 145.96.0.0/16
• 145.97.0.0/19
• 145.97.48.0/20
• 145.97.64.0/18
• 145.97.128.0/17
• 145.98.8.0/21
• 145.98.17.0/24
• 145.98.18.0/23
• 145.98.20.0/22
• 145.98.24.0/21
• 145.98.32.0/19
• 145.98.64.0/18
• 145.98.128.0/17
• 145.100.0.0/18
• 145.100.64.0/19
• 145.100.96.0/20
• 145.100.112.0/22
• 145.100.116.0/23
• 145.100.120.0/21
• 145.100.128.0/17
• 145.101.0.0/16
• 145.102.2.0/23
• 145.102.6.0/23
• 145.102.8.0/21
• 145.102.16.0/20
• 145.102.32.0/19
• 145.102.64.0/18
• 145.102.128.0/17
• 145.103.0.0/16
• 145.107.0.0/22
• 145.107.8.0/21
• 145.107.16.0/20
• 145.107.32.0/19
• 145.107.64.0/18
• 145.107.128.0/17
• 145.108.0.0/16
• 145.116.64.0/18
• 145.116.128.0/18
• 145.116.192.0/20
• 145.116.224.0/19
• 145.117.0.0/16
• 145.118.0.0/16
• 145.120.0.0/14
• 145.124.0.0/15
• 145.126.0.0/16
• 145.127.0.0/17
• 145.136.0.0/15
• 145.138.0.0/16
• 145.140.0.0/14
• 145.144.0.0/12
• 145.160.0.0/12
• 156.83.0.0/16
• 192.16.188.0/23
• 192.31.231.0/24
• 192.33.36.0/24
• 192.42.113.0/24
• 192.42.114.0/24
• 192.42.115.0/26
• 192.42.115.64/27
• 192.42.115.96/30
• 192.42.115.100/31

and 50 more.

Upstream networks

• AS6830 Liberty Global Europe Holding B.V.
• AS20562 Broadband Hosting B.V.
• AS3257 GTT Communications Inc.
• AS6939 Hurricane Electric LLC
• AS11537 Internet2
• AS50304 Blix Solutions AS
• AS9002 RETN Limited
• AS37721 Virtual Technologies & Solutions
• AS204092 Association GRIFON
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS50300 CustodianDC Limited
• AS17639 Converge ICT Solutions Inc.
• AS24482 SG.GS
• AS213241 TECHIT.BE SRL
• AS48185 team.blue NV
• AS37100 SEACOM Limited
• AS57866 Fusix Networks B.V.
• AS50673 Serverius Holding B.V.
• AS6696 VERIXI SA
• AS34927 iFog GmbH
• AS20485 Joint Stock Company TransTeleCom
• AS12552 GlobalConnect AB
• AS3303 Swisscom (Schweiz) AG
• AS293 ESnet
• AS7575 Australian Academic and Research Network (AARNet)

Downstream networks

• AS7552 Viettel Group
• AS3257 GTT Communications Inc.
• AS1104 Stichting Nederlandse Wetenschappelijk Onderzoek Instituten
• AS2907 Research Organization of Information and Systems, National Institute of Informatics
• AS6057 Administracion Nacional de Telecomunicaciones
• AS12322 Free SAS
• AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)
• AS45899 VNPT Corp
• AS2018 Tertiary Education and Research Network of South Africa
• AS4800 PT Aplikanusa Lintasarta
• AS18678 INTERNEXA S.A. E.S.P
• AS1888 Stichting Centrum voor Wiskunde en Informatica
• AS1124 IDDQD-AS
• AS3462 Data Communication Business Group
• AS36351 IBM Cloud
• AS9304 HGC Global Communications Limited
• AS1140 Stichting Internet Domeinregistratie Nederland
• AS1128 SURF B.V.
• AS7575 Australian Academic and Research Network (AARNet)
• AS1152 SURF B.V.
• AS1102 SURF B.V.
• AS16347 ADISTA SAS
• AS15557 SFR SA
• AS1101 SURF B.V.
• AS288 European Space Agency (ESA)

Adjacent networks

• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS3257 GTT Communications Inc.
• AS9498 BHARTI Airtel Ltd.
• AS20562 Broadband Hosting B.V.
• AS4230 CLARO S.A.
• AS7552 Viettel Group
• AS11537 Internet2
• AS7195 EDGEUNO S.A.S
• AS7473 Singapore Telecommunications Ltd
• AS6830 Liberty Global Europe Holding B.V.
• AS1031 PEER 1031 LLC
• AS17557 Pakistan Telecommunication Company Limited
• AS8529 Zain Omantel International FZ-LLC
• AS30844 Liquid Telecommunications Ltd
• AS7049 Silica Networks Argentina S.A.
• AS271253 LINK BRASIL TELECOMUNICACOES LTDA
• AS4800 PT Aplikanusa Lintasarta
• AS20965 GEANT Vereniging
• AS2907 Research Organization of Information and Systems, National Institute of Informatics
• AS6939 Hurricane Electric LLC
• AS35280 F5 Networks SARL
• AS28283 Adylnet Telecom
• AS1828 Unitas Global
• AS18678 INTERNEXA S.A. E.S.P
• AS3216 PJSC "Vimpelcom"

Routing security

• RPKI: 90 valid, 0 invalid and 14 not-found announcements; 107 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 167 route objects.
• Listed in as-sets: AS-AS260-PEERS, AS-BBNED-AMSIX1, AS-CWCUSTEU, AS-DDITS:AS-PEERS, AS-DOCLER:AS-PEERS, AS-FINECOM-PEERS-AMSIX, AS-GBLXEU, AS-GREEN-IPV6-PEERS, AS-GREEN-PEERS, AS-GTTCUST6, AS-KPN, AS-LIECOMTEL-PEERS, AS-MANDA-AMSIX-PEERS-V4, AS-MANDA-AMSIX-PEERS-V6, AS-NOBSURF, AS-RIS-RRC03, AS-SCHERINGNRNS, AS-SIDN-PEERS-AMSIX-V4, AS-SIDN-PEERS-AMSIX-V6, AS-SPEAKUP-AMSIX-RS, AS-SURFNET, AS-TELECOM-PEERS, AS-TITANAMSIX, AS1103:AS-SURF, AS1200:AS-AMS-IX-PEERS.

Internet exchanges

• LINX LON1 — London, United Kingdom
• AMS-IX Amsterdam — Amsterdam, Netherlands
• Neutral Internet Exchange — Amsterdam, Netherlands
• The Frys Internet Exchange — Frysian, Netherlands
• Asteroid Amsterdam IX — Amsterdam, Netherlands