AS121· US— United States Department of Defense (DoD)

Selected local snapshot coverage; not the whole Internet. BGP snapshots: ris-rrc00 11 Oct 08:00 UTC; routeviews2 11 Oct 10:00 UTC; routeviews6 11 Oct 10:00 UTC. Validator: 11 Oct 12:26 UTC. Publication-point issues: 88

Observed originated prefixes

These are observed BGP origins, not an inventory of registered allocations or transit reachability.

0 matching prefix–origin pairs. Each pair appears once; source observations are in Details.

No matching route was observed in the available dataset.

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AS connectivity

1 observed neighbors · 1 direct networks including inferred relationships (excludes this AS).

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1 matching networks · 1–1 shown

Network	Relationship to AS121	IPv4/IPv6	Evidence
AS668 · US United States Department of Defense (DoD)	v4: upstream	IPv4	Observed + inferred IPv4 · upstream · CAIDA 2026-10-01 · ris-rrc00 11 Oct 08:00 UTC; routeviews2 11 Oct 10:00 UTC

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Peering & locations

Registry information

ARIN · fetched 10 Oct 23:27 UTC

Resource name

DNIC-AS-00121

Handle

AS121

RDAP country

Not supplied

ASN

121

Registered organizations

• United States Department of Defense (DoD)

Last Changed: 12 Sep 2025 13:43 UTC

Registration: 13 Aug 1987 04:00 UTC

Registry source

Allocation statistics

NRO/RIR delegated-extended records describe allocation or assignment ranges. They do not prove a BGP announcement or replace more-specific RDAP registration information. Country is the allocation record’s registration country, not the physical location of every address.

• AS121–AS121 · arin · assigned · ASN allocation country: US · Allocation date: 1987-08-13 — NRO/RIR data · snapshot 10 Oct 00:00 UTC

NRO data and format

Prefix count history

Local observation changes

Only comparable successful snapshots are compared. First imports, changed peer coverage and collection gaps are baselines, not new global routes or withdrawals. RPKI transition history is not available before it has been recorded.

No retained changes are available for this resource.