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AS7270 IDT Corporation

NET2PHONE - IDT Corporation · registered in the United States

IPv4 addresses208,128112 prefixes · 0.007% of announced IPv4
Rank in United States#312largest network in US by IPv4 space, of 18,338 · 0.02% of US
Rank worldwide#1,051of 79,396 networks with IPv4
IPv6noneno IPv6 routes announced
CountryUnited States18,679 ASNs registered there
Open AS7270 in ASN lookup Look up an IP in this network (66.33.128.1) All networks in United States

IPv4 prefixes

All 112 prefixes, in address order.

  • 66.33.128.0/22
  • 66.33.132.0/24
  • 66.33.133.0/24
  • 66.33.134.0/23
  • 66.33.136.0/23
  • 66.33.138.0/23
  • 66.33.140.0/23
  • 66.33.142.0/23
  • 66.33.144.0/24
  • 66.33.145.0/24
  • 66.33.146.0/23
  • 66.33.148.0/22
  • 66.33.152.0/22
  • 66.33.156.0/22
  • 66.33.160.0/22
  • 66.33.164.0/23
  • 66.33.166.0/24
  • 66.33.167.0/24
  • 66.33.168.0/23
  • 66.33.170.0/23
  • 66.33.172.0/22
  • 66.33.176.0/24
  • 66.33.177.0/24
  • 66.33.178.0/23
  • 66.33.180.0/22
  • 66.33.184.0/21
  • 111.235.152.0/24
  • 169.132.0.0/20
  • 169.132.16.0/23
  • 169.132.18.0/24
  • 169.132.19.0/24
  • 169.132.20.0/22
  • 169.132.24.0/21
  • 169.132.32.0/20
  • 169.132.48.0/21
  • 169.132.56.0/22
  • 169.132.60.0/24
  • 169.132.61.0/24
  • 169.132.62.0/23
  • 169.132.64.0/18
  • 169.132.128.0/19
  • 169.132.160.0/21
  • 169.132.168.0/23
  • 169.132.170.0/24
  • 169.132.171.0/24
  • 169.132.172.0/22
  • 169.132.176.0/20
  • 169.132.192.0/22
  • 169.132.196.0/23
  • 169.132.198.0/23
  • 169.132.200.0/21
  • 169.132.208.0/23
  • 169.132.210.0/23
  • 169.132.212.0/22
  • 169.132.216.0/22
  • 169.132.220.0/22
  • 169.132.224.0/19
  • 204.13.143.0/24
  • 205.228.245.0/24
  • 206.20.0.0/17
  • 206.20.128.0/18
  • 206.20.192.0/22
  • 206.20.196.0/23
  • 206.20.198.0/23
  • 206.20.200.0/23
  • 206.20.202.0/23
  • 206.20.204.0/22
  • 206.20.208.0/24
  • 206.20.209.0/24
  • 206.20.210.0/23
  • 206.20.212.0/22
  • 206.20.216.0/22
  • 206.20.220.0/22
  • 206.20.224.0/19
  • 207.113.10.0/24
  • 207.202.0.0/20
  • 207.202.21.0/24
  • 207.202.24.0/22
  • 207.202.37.0/24
  • 207.202.38.0/23
  • 207.202.40.0/21
  • 207.202.48.0/20
  • 207.202.66.0/23
  • 207.202.68.0/22
  • 207.202.72.0/21
  • 207.202.84.0/22
  • 207.202.88.0/21
  • 207.202.96.0/19
  • 213.166.103.0/24
  • 216.53.0.0/23
  • 216.53.2.0/24
  • 216.53.3.0/24
  • 216.53.4.0/22
  • 216.53.8.0/22
  • 216.53.12.0/23
  • 216.53.14.0/24
  • 216.53.15.0/24
  • 216.53.16.0/22
  • 216.53.20.0/24
  • 216.53.21.0/24
  • 216.53.22.0/23
  • 216.53.24.0/21
  • 216.53.32.0/19
  • 216.53.64.0/19
  • 216.53.96.0/24
  • 216.53.98.0/23
  • 216.53.100.0/22
  • 216.53.104.0/21
  • 216.53.112.0/23
  • 216.53.115.0/24
  • 216.53.116.0/22
  • 216.53.120.0/21

Other ASNs named IDT Corporation

2 other networks use the same organisation name; together with AS7270 they announce 209,664 IPv4 addresses.

ASNNameIPv4 addresses
AS30428NET2PHONE-GLOBAL-SERVICES - IDT Corporation US1,024
AS4361VERSATURE-NET2PHONE - IDT Corporation US512

Similar-sized networks in United States

ASNNameIPv4 addresses
AS10846#309 DEERE - Deere & Company209,152
AS14#310 COLUMBIA-GW - Columbia University208,896
AS7896#311 NU-AS - The Board of Regents of the University of Nebraska208,640
AS3464#313 ASC-NET - Alabama Supercomputer Authority207,616
AS398823#314 PEG-LA - PEG TECH INC207,104
AS1742#315 HARVARD-UNIV - Harvard University203,520

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