AS648

AS648 is one of fifty contiguous autonomous system numbers (AS616 through AS665) inside the bulk legacy block DNIC-ASBLK-00616-00665, registered under ARIN to the United States Department of Defense. The Defense Network Information Center's registration event on the block dates to 1990-04-19, read from the top-level events[] array of the ARIN RDAP autnum record — a date independently corroborated by bgp.tools, which reports AS648 as "Registered on 19 Apr 1990." ARIN carries no per-ASN sub-record for 648 specifically; the RDAP document returned by rdap.arin.net/registry/autnum/648 is the block-level record itself (handle AS616, startAutnum 616, endAutnum 665), last changed 2025-09-12. Like the rest of this DoD block, AS648 has no live routing footprint today: RIPEstat, CAIDA AS Rank, and bgp.he.net all agree on zero announced IPv4/IPv6 prefixes, zero observed BGP peers (0 of 326 RIS peers seeing it on v4, 0 of 321 on v6), and a singleton customer cone. CAIDA ranks it 79,459th globally, near the bottom of the active table, consistent with a reserved-but-unused allocation rather than an operating network. Administrative contact routes through DISA-Columbus at the DoD Network Information Center (300 North James Road, Whitehall, OH). A secondary community source names the specific allocation PENS-NET-AS under the Navy Network Information Center, but that label is absent from the authoritative ARIN RDAP record and is recorded here only as an unconfirmed secondary attribution. No notable public abuse signal was found.

Operator

United States Department of Defense (DoD); RDAP block holder is "DNIC-ASBLK-00616-00665" [Confirmed] — https://rdap.arin.net/registry/autnum/648

Country / RIR

US, ARIN [Confirmed] — RIPEstat as-overview / abuse-contact-finder (authoritative_rir: arin)

Allocated

1990-04-19 (ARIN RDAP autnum TOP-LEVEL "registration" event date for the DNIC-ASBLK-00616-00665 block that AS648 falls inside; NOT the decoy entity-level dates 1993-05-26 or 2007-01-12 found elsewhere in the same document); last changed 2025-09-12

[Confirmed] — https://rdap.arin.net/registry/autnum/648, corroborated by https://bgp.tools/as/648

Website

Unknown — no dedicated public operator page found for AS648 specifically; DISA's general public portal (https://www.disa.mil) has no AS648-specific page [Unknown]

Org status

RDAP status active (block registration in good standing, last changed 2025-09-12); routing status inactive — 0 announced prefixes in the global table [Confirmed] — https://rdap.arin.net/registry/autnum/648, https://bgp.he.net/AS648

Abuse contact

disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-17 — checked general threat-intel search coverage, NANOG archives, and AbuseIPDB (no dedicated AS648 page; abuseipdb.com/asn/648 returns 404); DoD-operated network, not a typical target of commercial abuse feeds

Network & routing

Size / routing

dormant — 0 IPv4/IPv6 prefixes announced, 0 RIS peers seeing it (0/326 v4, 0/321 v6), CAIDA degree total 0 (customer/peer/provider all 0); customer cone = 1 ASN (itself), 0 prefixes, 0 addresses

[Confirmed] — RIPEstat routing-status, CAIDA AS Rank (rank 79459), https://bgp.he.net/AS648, https://bgp.tools/as/648

Peering / RPKI

no PeeringDB record (peeringdb.com/asn/648 returns 404); RPKI not assessable — AS648 originates no prefixes so there are no ROAs to validate, and RIPEstat's rpki-validation endpoint requires a --prefix param

[Confirmed as "not assessable"] — https://www.peeringdb.com/asn/648, https://stat.ripe.net/AS648

Geo footprint

US — DISA-Columbus / DoD Network Information Center, 300 North James Road, Whitehall, OH 43213 (RDAP entity vcard); CAIDA's asn.longitude/latitude of 0,0 is a null placeholder and was not used as a geo fact [Confirmed] — https://rdap.arin.net/registry/autnum/648

Related ASNs

part of the contiguous bulk block AS616–AS665 (DNIC-ASBLK-00616-00665), registered to the same DoD entity on the same 1990-04-19 date [Confirmed] — https://rdap.arin.net/registry/autnum/648

Naming

block-level RDAP holder is the generic "DoD"; no per-ASN RDAP sub-record exists for 648. A secondary/community source names it "PENS-NET-AS" under the Navy Network Information Center (NNIC) — not present in ARIN RDAP, so tagged [Likely] rather than Confirmed — https://www.cidr-report.org/cgi-bin/as-report?as=AS648&view=2.0

Analyst note

One of fifty consecutive ASNs in a single bulk DoD block; RDAP returns only the block-level record, with no per-648 sub-entity. No IANA RFC reference exists for this DoD-administered block, so that field is left blank rather than invented.