AS19158 Zayo Bandwidth

ZAYOB-19158 - Zayo Bandwidth · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in United States#13,320largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#61,099of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountryUnited States18,679 ASNs registered there

Open AS19158 in ASN lookup Look up an IP in this network (216.123.100.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

216.123.100.0/24

IPv6 prefixes

All 1 prefix.

2001:438:8046::/48

Other ASNs named Zayo Bandwidth

13 other networks use the same organisation name; together with AS19158 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

AS4997AFS-WEST - Zayo Bandwidth US22,784

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

Similar-sized networks in United States

ASNNameIPv4 addresses

AS18792#13317 MEME - Meme Holdings LLC256

AS18944#13318 HEAP - AS18944 LLC256

AS19014#13319 NORCOM - NORCOM256

AS19503#13321 NYMAGDIA-LT-CL - Magnetar Capital LLC256

AS19532#13322 TRILLIANTNC - Trilliant Networks Inc.256

AS19712#13323 ZOLL-CHELM - ZOLL Medical Corporation256

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