AS6461 — ZAYO-6461

Network type: transit

AS6461 announces 1,144 IPv4 prefixes covering 1,584,640 addresses and 94 IPv6 prefixes.

About this network

Zayo is a large fibre and IP-transit provider (ZAYO-6461), best known for its extensive metro and long-haul dark-fibre network across North America and Europe.

What it's used for

• IP transit and wavelength/dark-fibre services to carriers, data centers, hyperscalers, and enterprises.
• Backbone and metro connectivity underpinning many other networks.

Notable

• Zayo is primarily an infrastructure (fibre/transport) provider; a lot of its value is the physical routes, with IP transit layered on top.
• Its rDNS encodes PoP/city codes, making Zayo routers useful path landmarks.

Interesting

• Zayo assembled its footprint through dozens of acquisitions of regional fibre operators during the 2010s.

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

Announced prefixes

• 23.139.176.0/24
• 31.99.0.0/18
• 45.33.128.0/20
• 50.115.24.0/24
• 63.208.55.0/24
• 63.249.63.0/24
• 64.56.211.0/24
• 64.124.0.0/23
• 64.124.2.0/24
• 64.124.4.0/22
• 64.124.9.0/24
• 64.124.10.0/23
• 64.124.12.0/24
• 64.124.14.0/23
• 64.124.16.0/20
• 64.124.32.0/21
• 64.124.40.0/22
• 64.124.44.0/23
• 64.124.46.0/24
• 64.124.48.0/21
• 64.124.57.0/24
• 64.124.58.0/23
• 64.124.60.0/22
• 64.124.64.0/23
• 64.124.66.0/24
• 64.124.68.0/23
• 64.124.71.0/24
• 64.124.72.0/21
• 64.124.80.0/24
• 64.124.82.0/23
• 64.124.85.0/24
• 64.124.86.0/23
• 64.124.88.0/22
• 64.124.93.0/24
• 64.124.94.0/23
• 64.124.97.0/24
• 64.124.98.0/23
• 64.124.101.0/24
• 64.124.102.0/23
• 64.124.104.0/23
• 64.124.106.0/24
• 64.124.108.0/22
• 64.124.112.0/22
• 64.124.116.0/23
• 64.124.119.0/24
• 64.124.121.0/24
• 64.124.122.0/23
• 64.124.124.0/23
• 64.124.126.0/24
• 64.124.128.0/22
• 64.124.133.0/24
• 64.124.135.0/24
• 64.124.137.0/24
• 64.124.138.0/23
• 64.124.140.0/24
• 64.124.142.0/24
• 64.124.144.0/21
• 64.124.152.0/22
• 64.124.157.0/24
• 64.124.159.0/24
• 64.124.160.0/20
• 64.124.176.0/24
• 64.124.178.0/23
• 64.124.180.0/22
• 64.124.184.0/23
• 64.124.187.0/24
• 64.124.188.0/24
• 64.124.191.0/24
• 64.124.192.0/21
• 64.124.200.0/22
• 64.124.204.0/23
• 64.124.206.0/24
• 64.124.208.0/22
• 64.124.212.0/24
• 64.124.214.0/23
• 64.124.216.0/22
• 64.124.220.0/24
• 64.124.222.0/23
• 64.124.224.0/22
• 64.124.228.0/23
• 64.124.230.0/24
• 64.124.232.0/21
• 64.124.240.0/20
• 64.125.0.0/19
• 64.125.32.0/21
• 64.125.40.0/22
• 64.125.45.0/24
• 64.125.46.0/23
• 64.125.48.0/20
• 64.125.64.0/23
• 64.125.67.0/24
• 64.125.68.0/22
• 64.125.72.0/22
• 64.125.76.0/24
• 64.125.78.0/23
• 64.125.80.0/22
• 64.125.84.0/23
• 64.125.86.0/24
• 64.125.88.0/21
• 64.125.99.0/24

and 1,138 more.

Upstream networks

• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS3356 Level 3 Parent, LLC
• AS1299 Arelion Sweden AB
• AS3257 GTT Communications Inc.
• AS2914 NTT America, Inc.
• AS50304 Blix Solutions AS
• AS577 Bell Canada
• AS7018 AT&T Enterprises, LLC
• AS9002 RETN Limited
• AS37721 Virtual Technologies & Solutions
• AS15935 ha-vel internet s.r.o.
• AS24482 SG.GS
• AS1257 Tele2 Sverige AB
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS34019 Hivane Association
• AS17639 Converge ICT Solutions Inc.
• AS3741 Dimension Data
• AS2152 CENIC
• AS12552 GlobalConnect AB
• AS6424 EDGOO NETWORKS UNIPESSOAL LDA
• AS20485 Joint Stock Company TransTeleCom
• AS3491 PCCW Global (HK) Ltd.
• AS37100 SEACOM Limited

Downstream networks

• AS7155 ViaSat,Inc.
• AS46887 Crown Castle Fiber LLC
• AS30036 Mediacom Communications Corp
• AS13977 Fidium
• AS9498 BHARTI Airtel Ltd.
• AS16509 Amazon.com, Inc.
• AS35986 Vyve Broadband
• AS11686 Zayo Bandwidth
• AS12025 Iron Mountain Data Center
• AS20115 Charter Communications LLC
• AS812 Rogers Communications Canada Inc.
• AS6621 Hughes Network Systems, LLC
• AS11798 Ace Data Centers, Inc.
• AS137409 GSL Networks Pty LTD
• AS17072 TOTAL PLAY TELECOMUNICACIONES, S.A.P.I. DE C.V.
• AS22616 ZSCALER, INC.
• AS17378 TierPoint, LLC
• AS2675 Shared Services Canada
• AS40934 Fortinet Inc.
• AS29988 Rogers Communications Canada Inc.
• AS14593 Space Exploration Technologies Corporation
• AS20940 Akamai International B.V.
• AS63023 GTHost
• AS3360 DXC US Latin America Corporation
• AS32475 Internap Holding LLC

Adjacent networks

• AS34549 meerfarbig GmbH & Co. KG
• AS46887 Crown Castle Fiber LLC
• AS577 Bell Canada
• AS9498 BHARTI Airtel Ltd.
• AS2152 CENIC
• AS7473 Singapore Telecommunications Ltd
• AS6939 Hurricane Electric LLC
• AS48185 team.blue NV
• AS6424 EDGOO NETWORKS UNIPESSOAL LDA
• AS174 Cogent Communications, LLC
• AS7155 ViaSat,Inc.
• AS52320 GlobeNet Cabos Submarinos Colombia, S.A.S.
• AS3741 Dimension Data
• AS3356 Level 3 Parent, LLC
• AS2914 NTT America, Inc.
• AS37100 SEACOM Limited
• AS50304 Blix Solutions AS
• AS9002 RETN Limited
• AS15935 ha-vel internet s.r.o.
• AS7018 AT&T Enterprises, LLC
• AS42708 Glesys AB
• AS3257 GTT Communications Inc.
• AS12552 GlobalConnect AB
• AS29504 Freenet Liberec, z.s.
• AS1299 Arelion Sweden AB

Internet exchanges

• IX.br (PTT.br) São Paulo — São Paulo, Brazil
• DE-CIX Frankfurt — Frankfurt, Germany
• LINX LON1 — London, United Kingdom
• AMS-IX Amsterdam — Amsterdam, Netherlands
• Neutral Internet Exchange — Amsterdam, Netherlands
• France-IX Paris — Paris, France
• Equinix Internet Exchange Singapore — Singapore, Singapore
• Milan Internet Exchange — Milan, Italy
• Equinix Internet Exchange Ashburn — Ashburn, United States
• BroadBand Internet eXchange Tokyo — Tokyo, Japan
• London Network Access Point — London, United Kingdom
• JPIX Tokyo — Tokyo, Japan
• Toronto Internet Exchange — Toronto, Canada
• Speed Internet Exchange — Dronten, Netherlands
• DE-CIX New York — New York, United States
• Equinix Internet Exchange Chicago — Chicago, United States
• Singapore Internet Exchange — Singapore, Singapore
• Megaport IX Sydney — Sydney, Australia
• SwissIX — Zurich, Switzerland
• Equinix Internet Exchange Sydney — Sydney, Australia
• Equinix Internet Exchange Paris — Paris, France
• Equinix Internet Exchange Hong Kong — Hong Kong, China
• Equinix Internet Exchange Dallas — Dallas, United States
• DE-CIX Munich — Munich, Germany
• NIX.CZ - Neutral Internet eXchange for the Czech Republic — Prague, Czech Republic
• ERA-IX Amsterdam — Amsterdam, Netherlands
• Equinix Internet Exchange Miami — Miami, United States
• ESpanix Madrid Lower LAN — Madrid, Spain
• Digital Realty Atlanta Internet Exchange — Atlanta, United States
• Nine IX — Paris, France
• Berlin Commercial Internet Exchange — Berlin, Germany
• Bulgarian Internet eXchange — Sofia, Bulgaria
• LINX Manchester — Manchester, United Kingdom
• EuroGIX — Strasbourg, France
• France-IX Marseille — Marseille, France
• Equinix Internet Exchange New York — New York, United States
• Internet Neutral Exchange Association CLG - LAN1 — Dublin, Ireland
• Megaport Frankfurt IX — Frankfurt, Germany
• Megaport Dusseldorf IX — Düsseldorf, Germany
• France-IX Lyon — Lyon, France
• ERA-IX Frankfurt — Frankfurt, Germany
• Belgian National Internet Exchange — Brussels, Belgium
• Equinix Los Angeles IBX — Los Angeles, United States
• Internet Neutral Exchange Association CLG - LAN2 — Dublin, Ireland
• Megaport Hamburg IX — Hamburg, Germany
• LINX NoVa — Reston, United States
• Megaport Berlin IX — Berlin, Germany
• Stuttgarter Internet Exchange — Stuttgart, Germany
• Megaport Munich IX — Munich, Germany
• Asteroid Amsterdam IX — Amsterdam, Netherlands
• Network Service Provider IXP (Distributed IX in Edo) — Tokyo, Japan
• LINX Scotland — Scotland, United Kingdom