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AS4997 Zayo Bandwidth

AFS-WEST - Zayo Bandwidth · registered in the United States

IPv4 addresses22,78422 prefixes · <0.001% of announced IPv4
Rank in United States#2,022largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide#5,723of 79,396 networks with IPv4
IPv6noneno IPv6 routes announced
CountryUnited States18,679 ASNs registered there
Open AS4997 in ASN lookup Look up an IP in this network (208.39.192.1) All networks in United States

IPv4 prefixes

All 22 prefixes, in address order.

  • 208.39.192.0/21
  • 208.39.218.0/24
  • 208.39.222.0/24
  • 208.39.224.0/22
  • 208.39.228.0/23
  • 208.39.232.0/21
  • 208.39.246.0/23
  • 208.39.248.0/23
  • 208.39.250.0/23
  • 208.39.252.0/22
  • 216.222.0.0/21
  • 216.222.8.0/22
  • 216.222.12.0/23
  • 216.222.14.0/23
  • 216.222.24.0/22
  • 216.222.32.0/23
  • 216.222.36.0/22
  • 216.222.40.0/21
  • 216.222.48.0/20
  • 216.222.90.0/23
  • 216.222.92.0/23
  • 216.222.101.0/24

Other ASNs named Zayo Bandwidth

13 other networks use the same organisation name; together with AS4997 they announce 2,533,120 IPv4 addresses.

ASNNameIPv4 addresses
AS6461ZAYO-6461 - Zayo Bandwidth US1,596,672
AS11686ZAYO-ENA-11686 - Zayo Bandwidth US734,720
AS19092360NETWORKS-US - Zayo Bandwidth US69,376
AS32703IFN-NET - Zayo Bandwidth US34,560
AS15290ZAYO-CAN-15290 - Zayo Bandwidth US20,736
AS16503ZAYO-16503 - Zayo Bandwidth US20,224
AS17025ZAYO-CUSTOMER-17025 - Zayo Bandwidth US14,848
AS13555EAGLE-NET-ALLIANCE - Zayo Bandwidth US8,704
AS33321ZAYO-33321 - Zayo Bandwidth US3,840
AS22969AFS-ATL - Zayo Bandwidth US2,816
AS11359RMCNEVADA - Zayo Bandwidth US2,304
AS6401ZAYO-CAN-6401 - Zayo Bandwidth US1,280
AS19158ZAYOB-19158 - Zayo Bandwidth US256

Similar-sized networks in United States

ASNNameIPv4 addresses
AS26667#2019 RUBICONPROJECT - Magnite, Inc.22,784
AS214036#2020 ULTAHOST-AS Ultahost, Inc.22,784
AS149#2021 DNIC-AS-00149 - United States Department of Defense (DoD)22,784
AS17380#2023 PROJ-MUT-TEL - Project Mutual Telephone Cooperative Association, Inc.22,784
AS19254#2024 KOCH-INDUSTRIES - Koch Industries, Inc.22,784
AS25844#2025 SKADDEN1 - Skadden, Arps, Slate, Meagher & Flom LLP22,784

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources