138.138.138.138   !rdap !whois !bl !ptr24 !scan !tr !dnstr !g !gsec
138/8 IANA DesignationAdministered by ARIN
May 1993

LEGACY
Allocated by the central Internet Registry (IR) prior to the Regional Internet Registries (RIRs). This address space is now administered by individual RIRs, including maintenance. Assignments from these blocks are distributed globally on a regional basis.
Regional Internet RegistryARIN - North America
CounrtyUnited States
(Latitude, Longtitude)(37.7510, -97.8220) !omap
Autonomous System Number5972 !asn !whois !rdap !prefixes !peers !siblings
AS NameDNIC-ASBLK-05800-06055
AS Organization Regional Registry HandleDNIC
AS Regional RegistryARIN
AS Organization NameDoD Network Information Center
AS Organization CountryUS, United States !omap
AS DescriptionDNIC-ASBLK-05800-06055
DoD Network Information Center
Announced Prefix 138.138.136.0/21   !cidr !bgp
  
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