AS904

AS904 is an Autonomous System Number assigned within the IANA block reserved for ARIN (1-1876), and it shows no active routing: RouteViews recorded zero originated IPv4 or IPv6 prefixes and zero peer adjacencies at its most recent collection. No operator-published source names AS904's current holder, so this entry cannot confirm an operator, network type, or country.

Third-party IP-intelligence directories disagree on this ASN's history, with conflicting reassignment records observed over time. Because those directories are unverified mirrors rather than operator-published material, none of them is used to identify the holder here.

The CAIDA AS Relationships dataset carries no row naming AS904 as either an originator or a counterparty, so no provider, customer, or peer relationship is classified for this ASN -- an absence of classification, not a measured zero. RPKI validation status, IX presence, and any peering policy remain unknown, as no permitted source covers them.

No public abuse or security signal was found for AS904 as of a September 2026 search: it does not appear on Spamhaus's ASN-DROP list, has no current entries in abuse.ch's Feodo Tracker botnet command-and-control listing, and returns no hits in a NANOG mailing-list archive search.

Routing status

Zero prefixes and zero peer adjacencies observed by RouteViews at the most recent collection; this is not evidence the ASN is formally deallocated.

Relationship data

Unclassified in the CAIDA AS Relationships dataset -- no provider, customer, or peer relationship is inferred.

Abuse signal

Not listed on Spamhaus ASN-DROP, and no current entries in abuse.ch Feodo Tracker, as of a September 2026 search.

Community mentions

No NANOG mailing-list discussion of AS904 found via a marc.info archive search as of a September 2026 search.

Identity

No operator-published material names this ASN's holder; third-party directories carry conflicting, unverified reassignment history and are not used here.

RIR

ARIN [Confirmed] (the IANA Autonomous System Number registry 1-1876)

Operator / As-name

Unknown -- no operator-published source names AS904's holder [Unknown] (search conducted September 2026; no citable positive source)

Country

Unknown [Unknown]

Allocated date

Unknown [Unknown]

Network & routing

Upstream/customer/peer relationships

Unclassified in the CAIDA AS Relationships dataset -- not a measured zero [Confirmed] (the cached registry snapshots/caida-as-rel.csv AS904 absent)

RPKI status

Unknown -- no permitted source [Unknown]

IX presence

Unknown -- no permitted source [Unknown]

Peering policy

Unknown -- no operator-published policy found [Unknown]

AS rank / customer cone

Unknown -- barred source (CAIDA AS Rank restricted to internal evaluation) [Unknown]

ASN

AS904 [Confirmed] (the IANA Autonomous System Number registry 1-1876)

Assignment class

Unknown -- the IANA row states only "Assigned by ARIN," with no reserved/private/documentation classification [Confirmed] (the IANA Autonomous System Number registry 1-1876)

IPv4 prefixes observed

0 [Confirmed] (the RouteViews BGP routing data (CC BY 4.0) AS904)

IPv6 prefixes observed

0 [Confirmed] (the RouteViews BGP routing data (CC BY 4.0) AS904)

IPv4 address estimate

0 [Confirmed] (the RouteViews BGP routing data (CC BY 4.0) AS904)

Peer count observed

0 [Confirmed] (the RouteViews BGP routing data (CC BY 4.0) AS904)

Last updated

Unknown [Unknown]

Spamhaus ASN-DROP

Not listed as of September 2026 [Confirmed] (https://www.spamhaus.org/drop/asndrop.json)

Feodo Tracker

No current entries as of September 2026 [Confirmed] (https://feodotracker.abuse.ch/browse/)

NANOG archive

Zero hits for "AS904" as of September 2026 [Confirmed] (https://marc.info/?s=AS904&l=nanog)