AS824

AS824 is a single-homed enterprise ASN registered to the pharmaceutical company GlaxoSmithKline (now legally GSK plc) that originates exactly one IPv4 prefix and carries no live peering or transit business — it is not a transit provider or ISP.

ARIN RDAP records the autnum's top-level registration event (allocated_date) as 1994-03-29, with a last-changed date of 2007-06-08. The registrant org handle is SBC-92, based at 5 Crescent Drive, Philadelphia, PA 19112. GlaxoSmithKline plc renamed itself GSK plc in May 2022, but ARIN's registry still carries the legacy "GlaxoSmithKline" name.

Routing is minimal and internally consistent: bgp.he.net shows one announced IPv4 prefix, 145.240.6.0/23 (~512 addresses, labeled "GSK admin"), reached through a single observed upstream, AS10753 (Level 3 Parent, LLC / Lumen). No IPv6 is announced. CAIDA AS Rank places this ASN at 54406, with a customer cone of 1 ASN / 1 prefix / 512 addresses and an AS-degree of 1 total (0 customer, 0 peer, 1 provider) — the provider-degree of exactly 1 independently corroborates the single-upstream AS10753 finding.

RPKI posture is now resolved rather than untested: a live RIPEstat rpki-validation query against the announced prefix 145.240.6.0/23 returns status "unknown" with zero validating ROAs. The prefix is simply uncovered by any Route Origin Authorization — a confirmed absence, not a fetch failure.

A geo discrepancy surfaced in prior research and is now closed as a geolocation-database artifact rather than left open: registry contacts place the organization entirely in the US (Philadelphia and Collegeville, PA), but bgp.he.net's listing for the sole announced prefix carries a France geo-tag, while CAIDA's own coordinates for this ASN (35.64°N, 67.23°E) instead point to central Asia. Two mutually contradictory third-party reads against one consistent, all-US registry record are read as noise in the geolocation databases, not a routing or hijack signal. bgp.he.net's accompanying "announces bogons" banner still shows an empty Bogon Prefixes table, which remains inconclusive.

PeeringDB's network record for this ASN (name "GLAXOSMITHKLINE") has no populated website, policy_general, policy_url, info_type, or facility fields — consistent with CAIDA's peer-degree of 0 and with an enterprise network that does not solicit peering.

Operator

GSK plc (ARIN registry still shows the pre-2022 legacy name "GlaxoSmithKline"; the company legally renamed GlaxoSmithKline plc → GSK plc in May 2022) [Confirmed] — https://rdap.arin.net/registry/autnum/824, https://www.gsk.com/en-gb/about-us/

Country / RIR

US, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/824

Allocated

1994-03-29 (ARIN RDAP autnum top-level registration event); last changed 2007-06-08 [Confirmed] — https://rdap.arin.net/registry/autnum/824

Org status

ARIN RDAP status Active; abuse POC (GSKCS-ARIN) unvalidated since 2023-03-08; technical/admin POCs (GSKTE-ARIN/GSKAD-ARIN) validated, all three POC vCards declare kind:"group" (role mailboxes, not personal contacts) [Confirmed] — https://rdap.arin.net/registry/autnum/824

Contacts

csir@gsk.com (abuse, role mailbox, POC unvalidated since 2023-03-08); addrmgmt@gsk.com (technical/admin, role mailbox, Collegeville PA, validated); registrant address 5 Crescent Drive, Philadelphia, PA 19112 [Confirmed] — https://rdap.arin.net/registry/autnum/824

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-08-04 in NANOG mailing-list archive searches or ipinfo.io's ASN profile; Spamhaus's check returned HTTP 403 (status Unknown, not confirmed clean); bgp.he.net's "announces bogons" banner accompanies an empty Bogon Prefixes table, treated as inconclusive [Likely] — https://www.mail-archive.com/search?q=%22AS824%22&l=nanog%40nanog.org, https://ipinfo.io/AS824, https://check.spamhaus.org/query/ip/asn/824, https://bgp.he.net/AS824

Network & routing

Network type

enterprise/corporate (pharmaceutical); single-homed, not a transit provider or ISP; PeeringDB lists no facilities and no IXP presence [Likely] — https://www.peeringdb.com/api/net?asn=824, https://bgp.he.net/AS824

Size

1 IPv4 prefix (145.240.6.0/23, ~512 addresses, "GSK admin"); 0 IPv6 prefixes; CAIDA AS Rank 54406; customer cone 1 ASN / 1 prefix / 512 addresses; AS-degree total 1 (0 customer, 0 peer, 1 provider) [Confirmed] — https://bgp.he.net/AS824, https://api.asrank.caida.org/v2/restful/asns/824 (2026-08-05)

Routing/peering

single observed upstream AS10753 (Level 3 Parent, LLC / Lumen), matching CAIDA's provider-degree of 1; no distinct peers listed, matching CAIDA's peer-degree of 0; peering policy Unknown/not published — PeeringDB's policy_general and policy_url fields are both blank [Confirmed for upstream/degree; sourced-null for policy] — https://bgp.he.net/AS824, https://api.asrank.caida.org/v2/restful/asns/824, https://www.peeringdb.com/api/net?asn=824

RPKI

No ROA found covering 145.240.6.0/23 — RIPEstat rpki-validation returns status "unknown" with zero validating ROAs; the prefix is unprotected, not merely unchecked [Confirmed] — https://stat.ripe.net/data/rpki-validation/data.json?resource=824&prefix=145.240.6.0/23 (2026-08-05)

Notable usage

sole announced prefix described by bgp.he.net as "GSK admin" — reads as internal corporate/administrative address space, not a public-facing network [Likely] — https://bgp.he.net/AS824

Related ASNs

none identified in this research pass [Unknown]

Analyst note

enterprise ASN for a large pharmaceutical company, not a network operator. The France-vs-registry geo tag is closed as a geolocation-database artifact: bgp.he.net says France, CAIDA independently places the ASN in central Asia, and the registry record is entirely US-based — two contradictory third-party reads outweigh either as a real signal — https://rdap.arin.net/registry/autnum/824, https://bgp.he.net/AS824, https://api.asrank.caida.org/v2/restful/asns/824