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ASN Lookup Tool
AS7018 ATT-INTERNET4

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS7018
Organisation
AT&T Enterprises, LLC
Name
ATT-INTERNET4
Total IPv4 Addresses
89,256,618
Total IPv4 Prefixes
8,086
Total IPv6 Prefixes
216
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#4 out of 79,733
Registry
Arin
Registered Country
US flagUS
Registered Country Name
United States of America (the)
Registered Date
Registration Last Change
2025-03-18
Receiving From
ASN
Organisation
AS1239
US flagCogent Communications, LLC
AS7922
US flagComcast Cable Communications, LLC
AS3320
DE flagDeutsche Telekom AG
AS3356
US flagLevel 3 Parent, LLC
AS174
US flagCogent Communications, LLC
Showing 5 of 83
Transit To
ASN
Organisation
AS398282
WORLD flagPrivate Use AS
AS394402
WORLD flagPrivate Use AS
AS11969
WORLD flagPrivate Use AS
AS395350
WORLD flagPrivate Use AS
AS1239
US flagCogent Communications, LLC
Showing 5 of 2848
IPv4 Active Prefixes
PrefixRange FromRange To
12.0.4.0/2212.0.4.012.0.7.255
12.0.8.0/2112.0.8.012.0.15.255
12.0.16.0/2012.0.16.012.0.31.255
12.0.32.0/1912.0.32.012.0.63.255
12.0.64.0/2112.0.64.012.0.71.255
Showing 5 of 8,086
IPv6 Active Prefixes
PrefixRange FromRange To
2001:1890::/762001:1890::2001:1890::f:ffff:ffff:ffff
2001:1890:0:0:10::/792001:1890:0:0:10::2001:1890::11:ffff:ffff:ffff
2001:1890:0:0:12::/882001:1890:0:0:12::2001:1890::12:ff:ffff:ffff
2001:1890::12:100:0:0/912001:1890::12:100:0:02001:1890::12:11f:ffff:ffff
2001:1890::12:120:0:0/942001:1890::12:120:0:02001:1890::12:123:ffff:ffff
Showing 5 of 216