AS3333 — RIPE-NCC-AS Reseaux IP Europeens Network Coordination Centre RIPE NCC

AS3333 announces 5 IPv4 prefixes covering 4,608 addresses and 2 IPv6 prefixes.

About this network

RIPE-NCC-AS is the network of the RIPE NCC in Amsterdam, the Regional Internet Registry for Europe, the Middle East and parts of Central Asia — the body that allocates the IP addresses and AS numbers used across its region.

What it's used for

• Hosting the RIPE NCC's own services: the RIPE Database and whois, the registry's web presence, RPKI infrastructure, and the systems members use to manage their allocations.
• Measurement and research infrastructure, including the route collectors and probe systems the NCC runs to observe the global routing system.

Notable

• One of the most recognisable AS numbers in the world, largely by accident: its memorable digits made it the standard example in BGP documentation, tutorials and lab exercises for decades.
• The registry does not sell transit or hosting — this is an institutional network whose job is to keep the registry itself reachable.

Interesting

• Because so much teaching material uses AS3333 as the stand-in for "some AS", it turns up in misconfigured lab gear and copy-pasted configs leaking into the real internet more often than any other number.

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

Announced prefixes

• 193.0.0.0/21
• 193.0.10.0/23
• 193.0.12.0/23
• 193.0.18.0/23
• 193.0.20.0/22
• 2001:67c:2e8::/48
• 2a13:27c0::/44

Upstream networks

• AS1273 IDDQD-AS
• AS1103 SURF B.V.
• AS6939 Hurricane Electric LLC
• AS12859 BIT BV
• AS9002 RETN Limited
• AS1136 KPN B.V.
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS24482 SG.GS
• AS48185 team.blue NV
• AS48362 Stadtwerke Feldkirch
• AS204092 Association GRIFON
• AS50300 CustodianDC Limited
• AS17639 Converge ICT Solutions Inc.
• AS20485 Joint Stock Company TransTeleCom
• AS3303 Swisscom (Schweiz) AG
• AS57463 NetIX Communications JSC
• AS12552 GlobalConnect AB
• AS37100 SEACOM Limited
• AS37721 Virtual Technologies & Solutions
• AS6696 VERIXI SA
• AS56655 Gigahost AS
• AS213241 TECHIT.BE SRL
• AS29632 Netassist International EOOD
• AS25091 IP-Max SA

Downstream networks

• AS9498 BHARTI Airtel Ltd.
• AS16509 Amazon.com, Inc.
• AS13335 Cloudflare, Inc.
• AS5416 B.S.C.
• AS17557 Pakistan Telecommunication Company Limited
• AS137409 GSL Networks Pty LTD
• AS7713 PT Telekomunikasi Indonesia
• AS8866 Vivacom Bulgaria EAD
• AS9605 NTT DOCOMO, INC.
• AS3320 Deutsche Telekom AG
• AS3786 LG DACOM Corporation
• AS16276 OVH SAS
• AS8881 1&1 Versatel GmbH
• AS4775 Globe Telecoms
• AS19551 Incapsula Inc
• AS31133 PJSC MegaFon
• AS12322 Free SAS
• AS9304 HGC Global Communications Limited
• AS17639 Converge ICT Solutions Inc.
• AS8359 MTS PJSC
• AS8560 IONOS SE
• AS702 Verizon Business
• AS1136 KPN B.V.
• AS15830 Equinix (EMEA) Acquisition Enterprises B.V.
• AS4800 PT Aplikanusa Lintasarta

Adjacent networks

• AS1257 Tele2 Sverige AB
• AS3320 Deutsche Telekom AG
• AS6939 Hurricane Electric LLC
• AS1273 IDDQD-AS
• AS1103 SURF B.V.
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS1136 KPN B.V.
• AS2914 NTT America, Inc.
• AS9002 RETN Limited
• AS12859 BIT BV
• AS9498 BHARTI Airtel Ltd.
• AS6830 Liberty Global Europe Holding B.V.
• AS57304 JSC "RetnNet"
• AS3786 LG DACOM Corporation
• AS13335 Cloudflare, Inc.
• AS31133 PJSC MegaFon
• AS39386 Saudi Telecom Company JSC
• AS64049 Reliance Jio Infocomm Pte Ltd Singapore
• AS49666 Telecommunication Infrastructure Company
• AS137409 GSL Networks Pty LTD
• AS23764 CTGNet
• AS37468 Angola Cables
• AS16509 Amazon.com, Inc.
• AS20485 Joint Stock Company TransTeleCom
• AS7195 EDGEUNO S.A.S

Internet exchanges

• AMS-IX Amsterdam — Amsterdam, Netherlands
• Neutral Internet Exchange — Amsterdam, Netherlands