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AS3257
AS3257 GTT-BACKBONE GTT Communications Inc.
GTT-BACKBONE GTT Communications Inc. · registered in the United States
IPv4 addresses 4,103,936 3,937 prefixes · 0.131% of announced IPv4
Rank in United States #41 largest network in US by IPv4 space, of 18,338 · 0.30% of US
Rank worldwide #120 of 79,396 networks with IPv4
IPv6 89 x /32 (5,897,982 x /48) 201 prefixes
Similar-sized networks in United States
ASN Name IPv4 addresses
AS11351 #38 TWC-11351-NORTHEAST - Charter Communications Inc4,317,440
AS6389 #39 BELLSOUTH-NET-BLK - AT&T Enterprises, LLC4,237,056
AS16625 #40 AKAMAI-AS - Akamai Technologies, Inc.4,118,016
AS11003 #42 PANDG - The Procter and Gamble Company4,090,624
AS20057 #43 ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC3,979,776
AS36351 #44 SOFTLAYER - IBM Cloud3,642,112
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