AS528

AS528 is a legacy autonomous system number now maintained in the RIPE database under the object name AUGSBURG-GW1-AS, registered on 2002-08-21 through the ERX-AS528-MNT maintainer — the standard RIPE marker for an "Early Registration Transfer," meaning a legacy resource whose original registration predated formal RIR policy and was later administratively migrated from ARIN's records into RIPE's. The RDAP registrant remark ties the resource to "CDOIM Augsburg," Sheridan Kaserne, Grassigerweg 7, Augsburg, Germany, with an administrative/technical contact listing an APO New York address — signatures consistent with a former U.S. Army information-management office at a Cold War-era Kaserne rather than a commercial ISP or enterprise. The IANA 16-bit ASN block (1–1876) that AS528 falls within was originally assigned by ARIN, but the live, authoritative registry object today is maintained by RIPE NCC (RDAP source rdap.db.ripe.net, CAIDA source="RIPE", RIPEstat authoritative_rir="ripe"). Operationally the ASN is completely dormant: zero announced IPv4 and IPv6 prefixes, zero visible RIS peers out of 327 (v4) and 321 (v6) monitored peers, zero CAIDA AS relationships (no upstreams, peers, or customers), no PeeringDB record, and a near-bottom CAIDA ASRank of 79,459. No abuse contact is on file and no notable public abuse signal (Spamhaus ASN-DROP, NANOG archives) was found, consistent with an inactive legacy registration rather than a live network with a reputation history.

Operator

Unknown legal entity beyond RDAP's registrant string; RIPEstat holder field reads "AUGSBURG-GW1-AS - IDDQD-AS" and RDAP registrant remarks describe "CDOIM Augsburg," a former US Army Sheridan Kaserne installation in Augsburg, DE (base itself closed 1998, predating this registration)

[Likely] — https://rdap.db.ripe.net/autnum/528, https://bgp.he.net/AS528

Country / RIR

DE (Augsburg, per RDAP registrant postal remark); registry-authoritative RIR is RIPE NCC, though the parent IANA 16-bit block was originally ARIN-assigned [Confirmed for RIR; Likely for country] — https://rdap.db.ripe.net/autnum/528

Allocated

2002-08-21 (RIPE RDAP autnum top-level events[], eventAction="registration"); last changed 2017-11-15 [Confirmed — corroborated independently by bgp.he.net "Created: August 21, 2002" and bgp.tools "Registered on 21 Aug 2002"] — https://rdap.db.ripe.net/autnum/528, https://bgp.he.net/AS528, https://bgp.tools/as/528

Org status

RDAP autnum status is "active" (registry record not revoked) despite zero live announcements; third-party trackers (bgp.he.net, bgp.tools) classify it as a "LEGACY" AS [Confirmed] — https://rdap.db.ripe.net/autnum/528, https://bgp.he.net/AS528, https://bgp.tools/as/528

Contacts

no abuse contact on file (RIPEstat abuse-contact-finder returned an empty result) [Confirmed] — RIPEstat abuse-contact-finder (resource=528)

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-10; not listed in Spamhaus's live ASN-DROP feed, no NANOG-archive or hijack/route-leak mentions found; consistent with a dormant, unrouted ASN with negligible attack surface

Network & routing

Network type

legacy/historic institutional gateway ASN, not a commercial ISP, content network, or modern enterprise network; no PeeringDB profile exists [Likely] — https://rdap.db.ripe.net/autnum/528, https://www.peeringdb.com/api/net?asn=528

Size

dormant — 0 IPv4 prefixes / 0 IPv4 addresses, 0 IPv6 prefixes; CAIDA customer cone = singleton (1 ASN, 0 prefixes, 0 addresses) [Confirmed] — RIPEstat routing-status, CAIDA ASRank (resource=528), bgp.he.net/AS528

Routing/peering

not announced — 0 of 327 RIS peers seeing it (v4), 0 of 321 (v6); CAIDA AS degree total=0 (customer 0, peer 0, provider 0); no peering policy published anywhere [Confirmed] — RIPEstat routing-status, CAIDA ASRank

RPKI

not assessable — no announced prefixes exist to validate against a ROA [Unknown/not applicable] — RIPEstat rpki-validation (skipped, requires a prefix)

Notable usage

none observed in current routing; historically tied to a U.S. Army Kaserne information-management office in Augsburg, Germany, though the registration date (2002) post-dates that base's 1998 closure, suggesting an administrative/legacy record rather than a currently operating network

[Likely] — https://rdap.db.ripe.net/autnum/528, https://www.usarmygermany.com/USAREUR_City_Augsburg.htm

Related ASNs / website

none identified; no official operator website or PeeringDB record was found for AS528 or "CDOIM Augsburg" [Confirmed (absence)] — https://www.peeringdb.com/api/net?asn=528

Analyst note

dormant legacy ASN with a RIPE ERX (Early Registration Transfer) maintainer object, tied by RDAP remark to a former US Army Kaserne in Augsburg, Germany; the "IDDQD-AS" string appended to the RIPEstat holder field is unresolved and not independently corroborated, so it is flagged but not treated as a confirmed org name.