AS781

AS781 is a small, active legacy ASN registered under RIPE NCC to GIP RENATER, France's National Research and Education Network (NREN), and it currently originates a modest footprint of 4 IPv4 /24 prefixes and 1 IPv6 /32 through a single upstream, AS2200 — RENATER's main operational ASN.

The AS name, FR-RENATER-LOTHAIRE, and RENATER's own materials tie the number to a legacy regional academic network (StanNet/AmperNet) historically associated with the Lorraine region, folded into RENATER's national backbone rather than run independently. CAIDA geolocates the announcing infrastructure near Nancy (~48.79N, 6.72E), consistent with the Lorraine/"Lothaire" naming.

RIPE RDAP's top-level autnum registration event dates the allocation to 2002-09-19, last changed 2019-06-24. A third-party aggregator (bgp.tools) separately claims a "September 1993" registration date, but that figure is uncorroborated by RENATER or the RIPE record and likely conflates AS781's own allocation with GIP RENATER's 1993 founding year — it is noted here but not adopted as the allocated date.

CAIDA ranks AS781 at 11,749 globally with a customer cone of 2 ASNs, 5 prefixes, and 1,280 addresses — one downstream customer beyond itself, one upstream provider (AS2200), and zero observed peers. RENATER's peering policy for AS781 specifically is not publicly documented; RENATER operates several IXPs (SFINX in Paris; GUYANIX, MARTINIX, MAYOTIX, REUNIX overseas) at the organizational level, but no formal open/selective/restrictive classification was found for this ASN.

Operator

GIP RENATER (Groupement d'Intérêt Public RENATER) — full name Réseau National de télécommunications pour la Technologie, l'Enseignement et la Recherche [Confirmed] — rdap.db.ripe.net/autnum/781, renater.fr/a-propos/le-gip-renater

Country / RIR

France, RIPE NCC [Confirmed] — rdap.db.ripe.net/autnum/781

Allocated

2002-09-19 (RIPE RDAP top-level registration event), last changed 2019-06-24 [Confirmed]; a third-party (bgp.tools) claims "1993-09-01" but this is uncorroborated and not adopted [Unknown] — rdap.db.ripe.net/autnum/781, bgp.tools/as/781

Org status

active (RIPE RDAP status: ACTIVE); GIP RENATER is a French non-profit public-interest grouping (Groupement d'Intérêt Public), founded 1993; operates a dedicated CERT/CSIRT and participates in InterCERT-France

[Confirmed] — rdap.db.ripe.net/autnum/781, renater.fr/a-propos-le-gip-renater-lhistoire, services.renater.fr/cert/index

Contacts

RENATER NOC (24/7 ticket form; +33 0 800 774 795); no AS781-specific abuse mailbox found in this research pass [Unknown] — renater.fr/reseau/national-et-international/renaterix

Security/abuse context (NEUTRAL, DATED)

no notable public abuse or threat signal found as of 2026-07-31 via DuckDuckGo web-index and NANOG-archive queries; Spamhaus and Talos ASN-lookup pages returned HTTP 403 and were not directly confirmable [Likely] — search methodology caveat: native WebSearch budget was exhausted, so WebFetch against DuckDuckGo and named sources was used

Network & routing

Network type

National Research and Education Network (NREN); AS781 itself is a small legacy/regional AS (StanNet, AmperNet) operating under RENATER's national infrastructure [Confirmed] — rdap.db.ripe.net/autnum/781, renater.fr/a-propos/le-gip-renater

Size

4 IPv4 prefixes (~1,024 addresses) + 1 IPv6 /32 originated; CAIDA customer cone = 2 ASNs / 5 prefixes / 1,280 addresses; CAIDA AS rank 11,749 [Confirmed] — RIPEstat routing-status, bgp.he.net/AS781, CAIDA ASRank

Routing/peering

1 upstream provider, AS2200 (RENATER's main ASN); 0 observed peers per CAIDA; bgp.tools peer sample unavailable (HTTP 500, not retried) [Likely]. AS781-specific peering policy [Unknown] — no formal open/selective/restrictive classification published; RENATER operates IXPs (SFINX Paris; GUYANIX, MARTINIX, MAYOTIX, REUNIX) at the org level — CAIDA ASRank, bgp.he.net/AS781, renater.fr/reseau/national-et-international/renaterix

RPKI

not independently verified via RIPEstat for this ASN (endpoint requires a prefix parameter); bgp.he.net reports 2 valid ROAs (1 IPv4 + 1 IPv6), 0 invalid [Likely] — bgp.he.net/AS781

Notable usage

legacy regional academic network (StanNet, AmperNet) now operating as a small originator within RENATER's national R&E backbone; live routing runs through upstream AS2200 [Likely] — bgp.he.net/AS781, bgp.tools/as/781

Related ASNs

AS2200 (RENATER's main operational ASN; AS781's upstream) [Likely] — CAIDA ASRank, bgp.he.net/AS781

Analyst note

PeeringDB has no net record for AS781 (peeringdb.com/asn/781 and the /api/net?asn=781 endpoint both 404), so peering-policy detail stays Unknown rather than fabricated. A5 (community corroboration) abstained entirely — session WebSearch budget was exhausted before any AS781 query completed; no NANOG/Reddit/outage findings are asserted from that angle.