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AT&T, Inc.

CID 1United States

Address blocks

1

Addresses reserved

16,777,216

Registered address

4509 Friedrich Lane, Bldg 3
Austin 78744

Address blocks

PrefixRangeRegistrySize
DA:2B:DDDA:2B:DD:00:00:00 to DA:2B:DD:FF:FF:FFCID16,777,216 addresses