AS2734 CoreSite

CORESITE - CoreSite · registered in the United States

IPv4 addresses49,15232 prefixes · 0.002% of announced IPv4

Rank in United States#1,498largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#3,959of 79,396 networks with IPv4

IPv61 x /32 (110,601 x /48)9 prefixes

CountryUnited States18,679 ASNs registered there

Open AS2734 in ASN lookup Look up an IP in this network (66.35.64.1) All networks in United States

IPv4 prefixes

All 32 prefixes, in address order.

66.35.64.0/20
66.35.80.0/24
66.35.83.0/24
66.35.84.0/22
66.35.88.0/21
66.128.144.0/20
67.212.144.0/20
98.158.144.0/22
98.158.148.0/24
98.158.150.0/23
98.158.152.0/21
142.255.192.0/18
162.216.127.0/24
163.52.34.0/24
173.45.170.0/24
173.45.174.0/23
192.34.20.0/22
192.150.41.0/24
199.119.180.0/22
199.197.10.0/23
204.9.200.0/22
204.9.204.0/24
204.9.206.0/23
206.223.143.0/24
208.64.248.0/24
208.64.251.0/24
208.64.252.0/22
208.74.72.0/21
208.77.96.0/23
208.77.102.0/23
208.78.157.0/24
208.84.144.0/21

IPv6 prefixes

All 9 prefixes.

2604:3fc0:2000::/35
2605:6c00::/45
2605:6c00:8::/48
2605:6c00:1000::/36
2605:6c00:2000::/35
2605:6c00:4000::/34
2605:6c00:8000::/36
2605:6c00:a000::/36
2607:2f80::/32

Other ASNs named CoreSite

1 other network uses the same organisation name; together with AS2734 they announce 49,408 IPv4 addresses.

ASNNameIPv4 addresses

AS22437CORESITE-SPARE - CoreSite US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS394380#1495 LEASEWEB-USA-DAL - Leaseweb USA, Inc.49,408

AS15243#1496 WIDENER - Widener University49,408

AS397179#1497 BRIDGEWATER-COLLEGE - Bridgewater College49,408

AS31863#1499 DACEN-2 - Centrilogic, Inc.49,152

AS22987#1500 BRIGHTRIDGE - BrightRidge49,152

AS167#1501 WESLEYAN-AS - Wesleyan University49,152

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