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AS4889 United States Postal Service Office of Inspector General

USPSOIG-AS2 - United States Postal Service Office of Inspector General · registered in the United States

IPv4 addresses5121 prefixes · <0.001% of announced IPv4
Rank in United States#10,545largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide#49,540of 79,396 networks with IPv4
IPv6noneno IPv6 routes announced
CountryUnited States18,679 ASNs registered there
Open AS4889 in ASN lookup Look up an IP in this network (192.154.124.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

  • 192.154.124.0/23

Other ASNs named United States Postal Service Office of Inspector General

1 other network uses the same organisation name; together with AS4889 they announce 768 IPv4 addresses.

ASNNameIPv4 addresses
AS4888USPSOIG-AS1 - United States Postal Service Office of Inspector General US256

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IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources