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ASN Lookup Tool
AS20057 ATT-MOBILITY-LLC-AS20057

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS20057
Organisation
AT&T Enterprises, LLC
Name
ATT-MOBILITY-LLC-AS20057
Total IPv4 Addresses
4,114,944
Total IPv4 Prefixes
2,133
Total IPv6 Prefixes
196
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#125 out of 79,340
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
Transit To
ASN
Organisation
AS64011
WORLD flagPrivate Use AS
IPv4 Active Prefixes
PrefixRange FromRange To
12.72.0.0/1912.72.0.012.72.31.255
12.72.32.0/2112.72.32.012.72.39.255
12.72.40.0/2112.72.40.012.72.47.255
12.72.48.0/2112.72.48.012.72.55.255
12.72.56.0/2112.72.56.012.72.63.255
Showing 5 of 2,133
IPv6 Active Prefixes
PrefixRange FromRange To
2600:380::/402600:380::2600:380:ff:ffff:ffff:ffff:ffff:ffff
2600:380:100::/412600:380:100::2600:380:17f:ffff:ffff:ffff:ffff:ffff
2600:380:180::/412600:380:180::2600:380:1ff:ffff:ffff:ffff:ffff:ffff
2600:380:200::/392600:380:200::2600:380:3ff:ffff:ffff:ffff:ffff:ffff
2600:380:400::/382600:380:400::2600:380:7ff:ffff:ffff:ffff:ffff:ffff
Showing 5 of 196