AS819

AS819 is an actively-routed autonomous system registered to LARG*net (London and Region Global Computer Network), a not-for-profit regional network based in London, Ontario, Canada, operated in close association with Western University — it is not a dormant legacy ASN, and today originates roughly 18 IPv4 prefixes plus a single IPv6 block.

CAIDA AS Rank places AS819 at 3,696 globally as of 2026-08-05, with a customer cone of 6 ASNs, 52 prefixes, and 209,664 addresses, and an asnDegree total of 18 (5 customer, 8 peer, 5 provider) relationships. RIPEstat's routing-status corroborates the live announcement: 18 IPv4 prefixes covering about 12,032 addresses and 1 IPv6 prefix (2605:c700::/32), seen by all 327 of 327 IPv4 RIS peers and 321 of 321 IPv6 RIS peers, with 22 observed neighbours.

LARG*net is a member-owned regional area network (RAN), not a retail ISP. Its member base is public-sector and institutional: hospitals (London Health Sciences Centre — its primary internet connection for 30+ years — and St. Joseph's Health Care), the City of London and Middlesex County together with libraries and police/first-responder services, school boards, Western University and Fanshawe College, public utilities, and research organizations; it also brokers member access to eHealth Ontario and Ontario's ORION research network, and counts at least one private contract-research member (Alimentiv).

ARIN's RDAP autnum record for AS819 carries a top-level registration event of 2001-08-30, last changed 2012-02-24. PeeringDB lists LARG*net as a Non-Profit network carrying 10-20 Gbps of mostly-inbound traffic, running a Selective peering policy, with public peering at TorIX and facilities at Equinix Chicago and Telehouse Toronto.

CAIDA's degree profile shows 8 settlement-free peers. bgp.he.net's live BGP session table names at least six of them across IPv4 and IPv6: AS19752 (Hydro One Telecom), AS6939 (Hurricane Electric), AS174 (Cogent Communications), AS26677 (ORION), AS3257 (GTT Communications), and AS3303 (Swisscom). Older IRR-registered policy objects instead show imports from AS823 (Western University) and AS30323 with exports to AS19752 and AS15290; only AS19752 overlaps the live table, so the IRR objects may describe registered-but-not-currently-live relationships rather than the routed reality.

Governance is board-based: sponsoring members hold seats and assume financial risk, alongside regular-member and community-at-large representatives; named leadership per the operator's own site is Executive Director Dave Ghantous, Operations Director Tayfun Atasoy, and Board Chair R. Chelladurai (Western University).

Operator

LARG*net (London and Region Global Computer Network) — not-for-profit regional network; ARIN registrant LARG-NET, c/o Western University, London, ON, Canada [Confirmed] — ARIN RDAP autnum/819, largnet.ca/about

Country / RIR

CA, ARIN [Confirmed] — ARIN RDAP autnum/819

Allocated

2001-08-30 (ARIN RDAP autnum top-level registration event); last changed 2012-02-24 [Confirmed] — rdap.arin.net/registry/autnum/819

Org status

active not-for-profit corporation, board-governed (sponsoring members holding financial risk + regular-member reps + community-at-large seats); named leadership per site: Executive Director Dave Ghantous, Operations Director Tayfun Atasoy, Board Chair R. Chelladurai (Western University)

[Confirmed] — largnet.ca/about

Contacts

noc@largnet.ca (ARIN abuse contact, kind: "group" vCard) [Confirmed] — rdap.arin.net/registry/autnum/819

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-08-05 — Qrator Radar shows 0 BGP hijacks/0 route leaks/0 accepted leaks/0 DDoS amplifiers; no AS819 entry found in Spamhaus ASN-DROP; RPKI shows no ROA coverage for the two prefixes queried — 198.20.32.0/19 and 2605:c700::/32 — a confirmed negative for those two, not a whole-ASN finding (eight further IPv4 blocks remain unqueried); an unresolved bgp.he.net "announces bogons" notice conflicts with Qrator's bogons:0 and is flagged, not confirmed

Network & routing

Network type

regional, member-owned not-for-profit Regional Area Network (RAN) serving London, Ontario and the surrounding region ("Owen Sound to Windsor and everywhere in between"); PeeringDB classifies it Non-Profit, 10-20 Gbps traffic, mostly inbound [Confirmed] — largnet.ca/mission, peeringdb.com/asn/819

Size

18 originated IPv4 prefixes / ~12,032 addresses and 1 originated IPv6 block (2605:c700::/32); CAIDA AS Rank 3,696 globally; customer cone 6 ASNs, 52 prefixes, 209,664 addresses [Confirmed] — asrank.caida.org/asns/819, stat.ripe.net/AS819

Routing/peering

Selective peering policy per PeeringDB; public peering at TorIX (10G port); facilities at Equinix Chicago and Telehouse Toronto; IRR RADB::AS-LNET-MEMBERS; CAIDA asnDegree total 18 (customer 5, peer 8, provider 5); named live peers on bgp.he.net include AS19752 (Hydro One Telecom), AS6939 (Hurricane Electric), AS174 (Cogent), AS26677 (ORION), AS3257 (GTT), AS3303 (Swisscom) [Confirmed]. Older IRR policy objects (imports from AS823, AS30323; exports to AS19752, AS15290) only partially overlap the live table and may reflect registered-but-not-currently-routed relationships

[Likely] — asrank.caida.org/asns/819, bgp.he.net/AS819, peeringdb.com/asn/819

RPKI

no ROA coverage confirmed for the two prefixes actually queried, not a whole-ASN result — RIPEstat rpki-validation for 198.20.32.0/19 (1 of AS819's 18 IPv4 prefixes) and 2605:c700::/32 (its sole IPv6 prefix) returns status unknown with zero validating ROAs for each as of 2026-08-05; the other eight IPv4 blocks (3,840 of 12,032 IPv4 addresses) were not queried; bgp.he.net corroborates no valid RPKI originations for the prefixes it displays [Confirmed for the two queried prefixes; not assessed for the remaining eight IPv4 blocks] — stat.ripe.net/data/rpki-validation, bgp.he.net/AS819

Notable usage

hospitals (London Health Sciences Centre — primary internet connection 30+ years, St. Joseph's Health Care), the City of London and Middlesex County (incl. libraries, police, first-responder services), school boards, Western University, Fanshawe College, public utilities, research organizations, and private CRO member Alimentiv; also brokers access to eHealth Ontario and ORION

[Confirmed] — largnet.ca/press-impact, largnet.ca/about

Related ASNs

AS823 (Western University) is one of AS819's CAIDA-scored customers, not an upstream — AS823's own CAIDA asnDegree is customer 0 / peer 0 / provider 2 (two providers, zero customers), which rules out it being AS819's provider; an older IRR import from AS823 policy object does not establish the opposite direction. AS819's five CAIDA-scored providers are not enumerated by ASN in the ASRank API response (which returns only the aggregate asnDegree counts, not a named neighbour list) or in any other source checked this pass, so no upstream ASNs are named. AS30323, AS19752, AS15290 remain IRR-registered only, with no CAIDA-scored direction confirmed for any of them; live-observed peers per bgp.he.net are AS6939, AS174, AS26677, AS3257, AS3303 [Confirmed for CAIDA/bgp.he.net-observed peers and for AS823's customer-side direction; sourced null for AS819's named providers; Likely/unconfirmed for AS30323/AS19752/AS15290's direction] — bgp.he.net/AS819, asrank.caida.org/asns/819, asrank.caida.org/asns/823

Analyst note

an actively-routed regional not-for-profit ASN serving public-sector members in southwestern Ontario, unlike many small regional ASNs that sit dormant. CAIDA AS rank (3,696) and customer-cone size (6 ASNs, 52 prefixes, 209,664 addresses) are now confirmed via CAIDA AS Rank, previously missing because that source was absent from the original sources list. RPKI is a confirmed absence of ROA coverage for the two prefixes queried (198.20.32.0/19, 2605:c700::/32), not a whole-ASN result — eight further IPv4 blocks remain unqueried. AS823 was previously misclassified as an IRR-registered upstream; CAIDA shows AS823 with 0 customers, 0 peers, 2 providers, which makes it one of AS819's customers instead, and upstreams is now a sourced null because AS819's five CAIDA-scored providers are not individually named by any source checked. The bgp.he.net bogon-notice vs. Qrator bogons:0 discrepancy remains unresolved and is left flagged rather than resolved.