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Announced By
OriginOrigin RegistrantPrefixPrefix Registrant
AS19050 U.S. Department of Health & Human Services
IRR Valid
156.40.197.0/24
U.S. Department of Health & Human Services

Less Specific Announcements
OriginOrigin RegistrantPrefixPrefix Registrant
AS3527 National Institutes of Health
IRR Valid
156.40.0.0/16
Various Registries (Maintained by ARIN)
Matching Delegations
RegistryStatusPrefixCC
arin allocated 156.40.197.0/24 US United States