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155.163.28.0/23 is not visible in the global routing table.

Less Specific Announcements
OriginOrigin RegistrantPrefixPrefix Registrant
AS20057 AT&T Enterprises, LLC 155.163.0.0/18 AT&T Enterprises, LLC
AS20057 AT&T Enterprises, LLC 155.163.0.0/16 AT&T Enterprises, LLC
Matching Delegations
RegistryStatusPrefixCC
arin allocated 155.163.0.0/16 US United States