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ASN Lookup Tool
AS13979 ATT-IPFR

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS13979
Organisation
AT&T Enterprises, LLC
Name
ATT-IPFR
Total IPv4 Addresses
136,956
Total IPv4 Prefixes
200
Total IPv6 Prefixes
113
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#1,486 out of 79,459
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
AS7018
US flagAT&T Enterprises, LLC
AS3320
DE flagDeutsche Telekom AG
AS3356
US flagLevel 3 Parent, LLC
AS174
US flagCogent Communications, LLC
AS2914
US flagNTT America, Inc.
Showing 5 of 22
Transit To
ASN
Organisation
AS65000
WORLD flagPrivate Use AS
AS2576
US flagU. S. Department of Transportation
AS14298
US flagEnvironmental Protection Agency
AS8076
US flagDepartment of Housing and Urban Development
AS10616
US flagNational Oceanic and Atmospheric Administration
IPv4 Active Prefixes
PrefixRange FromRange To
12.158.72.0/2312.158.72.012.158.73.255
12.158.76.0/2312.158.76.012.158.77.255
15.0.65.0/2415.0.65.015.0.65.255
15.0.66.0/2315.0.66.015.0.67.255
15.0.68.0/2215.0.68.015.0.71.255
Showing 5 of 200
IPv6 Active Prefixes
PrefixRange FromRange To
2600:381:3900::/402600:381:3900::2600:381:39ff:ffff:ffff:ffff:ffff:ffff
2600:387:14::/482600:387:14::2600:387:14:ffff:ffff:ffff:ffff:ffff
2606:ae00:41f0::/442606:ae00:41f0::2606:ae00:41ff:ffff:ffff:ffff:ffff:ffff
2606:ae00:4200::/432606:ae00:4200::2606:ae00:421f:ffff:ffff:ffff:ffff:ffff
2606:ae00:4340::/442606:ae00:4340::2606:ae00:434f:ffff:ffff:ffff:ffff:ffff
Showing 5 of 113