AS831

AS831 is a dormant legacy autonomous system registered under ARIN to Bell Sygma Systems Management Inc., a former Bell Canada IT subsidiary, and it announces zero IPv4 and zero IPv6 prefixes today. Every routing source consulted — RIPEstat, bgp.he.net, and bgp.tools — agrees: 0 of 327 RIS peers see it in IPv4, 0 of 321 in IPv6, and its CAIDA customer cone contains only the ASN itself, with 0 prefixes and 0 addresses.

The registrant corporation has itself been inactive since a 1996-01-01 amalgamation into Bell Sygma Inc., which was later dissolved outright on 2014-05-30 under a CBCA voluntary winding-up. The wider Bell Sygma business was absorbed into CGI Group in a transaction that closed 1998-07-01. The ARIN registry record, by contrast, remains formally active — the allocation was never returned, only abandoned operationally.

AS831 was allocated 1994-06-01 per the ARIN RDAP autnum object's top-level registration event, corroborated by bgp.tools ('Established June 1, 1994'). Its only recorded BGP activity was a single prefix, 198.235.69.0/24, announced for roughly three weeks between 2000-08-18 and 2000-09-07, and never reannounced since. CAIDA ranks it 79,459 — near the bottom of global prominence — with no upstreams, peers, or IXP presence found.

No sibling ASN has been confirmed for AS831's SYGMA-EXT-OR naming scheme. A prior draft named AS829 ('SYGMA-INT-OR') as an internal-operations counterpart; direct ARIN RDAP shows AS829 is actually SUPER48, registrant 915498 Ontario Inc, unconnected to Bell Sygma, and no SYGMA-INT-* ASN exists anywhere. AS832 (SYGMA-EXT-QR) registered three minutes after AS831 under a related-but-distinct ARIN org handle, but shares AS831's own 'EXT' designator rather than completing an internal/external pair, so it is not a substitute sibling.

Operator

Bell Sygma Systems Management Inc. (ARIN org handle BSSM-2; Corporations Canada corporation number 288507-7, incorporated 1993-01-07 under the CBCA; status Inactive — amalgamated into Bell Sygma Inc., corp# 321595-4, on 1996-01-01, itself dissolved 2014-05-30)

[Confirmed] — https://rdap.arin.net/registry/entity/BSSM-2, https://ised-isde.canada.ca/cc/lgcy/fdrlCrpDtls.html?corpId=2885077

Country / RIR

CA, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/831

Allocated

1994-06-01 (ARIN RDAP autnum top-level registration event); last changed 1994-06-01 (~9h15m later, same day) [Confirmed] — https://rdap.arin.net/registry/autnum/831

Org status

ARIN record active/allocated (not reclaimed); registrant Bell Sygma Systems Management Inc. inactive since a 1996-01-01 amalgamation into Bell Sygma Inc., itself dissolved 2014-05-30 under a CBCA voluntary winding-up; wider Bell Sygma business absorbed into CGI Group, transaction closed 1998-07-01 [Confirmed] — https://rdap.arin.net/registry/entity/BSSM-2, https://ised-isde.canada.ca/cc/lgcy/fdrlCrpDtls.html?corpId=3215954, https://www.cgi.com/en/cgi-shareholders-approve-acquisition-of-bell-sygma

Contacts

an ARIN-listed abuse contact exists but is an individual POC (CC52-ARIN) and is withheld per repo personal-contact-detail policy; ARIN itself flags it unvalidated since 2010-06-10, corroborating an abandoned registration; HQ 100 Wynford Drive, 1st Floor, Don Mills, Ontario M3C 1K4, Canada (BSSM-2 org-level address)

[Confirmed] — https://rdap.arin.net/registry/autnum/831, https://rdap.arin.net/registry/entity/BSSM-2

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-08-07 — not in AbuseIPDB (direct check-page fetch returns HTTP 403; conclusion rests on search coverage, not a direct page read), Spamhaus, Talos Intelligence, VirusTotal, or NANOG mailing-list archives; consistent with an unrouted, dormant ASN [Confirmed] — https://www.abuseipdb.com/check/AS831, https://www.spamhaus.org/blocklists/spamhaus-blocklist/, https://www.talosintelligence.com/, https://www.virustotal.com/, https://seclists.org/nanog/

Network & routing

Network type

unrouted/dormant; bgp.tools lists network type as Unknown. The 'EXT' in the AS-SET name (SYGMA-EXT-OR) may denote 'external,' but no internal-counterpart ASN was located, so the intended naming purpose is unconfirmed [Confirmed for unrouted status; Unknown for the EXT-naming purpose] — https://bgp.tools/as/831

Size

dormant — 0 IPv4/IPv6 prefixes currently announced; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — https://bgp.he.net/AS831, https://bgp.tools/as/831, https://asrank.caida.org/asns/831

Routing/peering

NOT announced — 0/327 RIS peers see it in v4, 0/321 in v6; 0 observed_neighbours; CAIDA asnDegree total 0 (customer 0, peer 0, provider 0); historical exception: 198.235.69.0/24 announced 2000-08-18 to 2000-09-07, never reannounced

[Confirmed] — https://stat.ripe.net/AS831, https://bgp.he.net/AS831, https://asrank.caida.org/asns/831

RPKI

not assessable — AS831 announces no prefixes, so there are no ROAs to validate [Confirmed]

Notable usage

Bell Sygma Systems Management Inc. was a data-processing-focused Bell Canada IT subsidiary under holding company Bell Sygma Inc. in the early-to-mid 1990s (distinct from sibling Bell Sygma Telecom Solutions Inc., a systems-integration company); AS831 (SYGMA-EXT-OR) briefly carried one prefix in 2000 [Confirmed for corporate role; Likely for the routing episode's purpose] — https://www.dgp.toronto.edu/tp/industry/bell.html

Related ASNs

none confirmed — AS829 was investigated as a possible 'SYGMA-INT-OR' internal-operations sibling, but ARIN RDAP shows it is SUPER48, registrant 915498 Ontario Inc, with no connection to Bell Sygma; no SYGMA-INT-* ASN was located anywhere [Confirmed]. AS832 (SYGMA-EXT-QR, org handle BSSM-3) registered within three minutes of AS831 under a related-but-distinct ARIN org object but shares AS831's own 'EXT' designator rather than completing an internal/external pair, so it is not offered as a naming-scheme sibling

[Likely] — https://rdap.arin.net/registry/autnum/829, https://rdap.arin.net/registry/autnum/832

Analyst note

Encountered as an orphaned legacy ASN allocated in 1994 to a Bell Canada IT subsidiary that ceased independent corporate existence via a 1996 amalgamation into Bell Sygma Inc. (itself dissolved 2014-05-30); the ASN briefly carried one prefix in 2000 and has been unrouted for over two decades since, while its ARIN registration was never formally returned. No sibling ASN completing the SYGMA-EXT/INT naming scheme was located: AS829, previously suspected as a 'SYGMA-INT-OR' counterpart, is actually SUPER48 (915498 Ontario Inc, unrelated); AS832 (SYGMA-EXT-QR) registered minutes apart under a related-but-distinct ARIN org handle but shares AS831's own 'EXT' designator, not an 'INT' one.