AS777

AS777 is an active legacy autonomous system registered under RIPE NCC to CEA-Saclay, the Saclay campus of France's national atomic-energy and alternative-energies research agency, and it currently originates a small block of legacy IPv4 space with no IPv6 announcements — a live but narrow institutional network, not a public transit operator.

RIPE RDAP's autnum object records a top-level "registration" event of 1970-01-01. This is a well-documented RIPE Unix-epoch placeholder used for legacy resources created before RIPE's database tracked real timestamps, not a genuine historical allocation year; the true first-allocation date is Unknown. The only substantively meaningful RDAP date is "last changed": 2018-09-04, itself a record-update timestamp rather than a re-registration.

On routing, RIPEstat counts 10 IPv4 prefixes (~198,656 addresses) announced over its recent query window; bgp.he.net's longer historical view counts 17 prefixes across the same legacy 132.165.0.0–132.169.0.0 /16-range and several 192.x.x.x /24 blocks — a window-length difference, not a contradiction. CAIDA ranks it 12,678 globally, with a singleton customer cone (16 prefixes, 329,728 addresses) and degree data (provider=1, customer=0, peer=0) showing exactly one upstream: AS2200 (RENATER, the French National Research and Education Network), and no settlement-free peers.

CEA is not a network operator in any commercial sense: its PeeringDB record is essentially blank (name literally "UNSPECIFIED", no website or policy fields, zero IX or facility connections, IPv6 disabled), and no peering policy is published on cea.fr. This is consistent with an internal research-campus network reaching the internet solely via the French academic backbone.

Operator

CEA-Saclay (Commissariat à l'énergie atomique et aux énergies alternatives) — RIPE registrant handle AS777-MNT; the RDAP 'name' field is itself a placeholder ("UNSPECIFIED"), but entity/contact records and the remark field ("CEA-Saclay") resolve to CEA, address DSI/SIP, CEA Saclay, F-91191 Gif/Yvette, France

[Confirmed] — https://rdap.db.ripe.net/autnum/777, https://bgp.he.net/AS777

Country / RIR

France, RIPE NCC (not ARIN — RIPEstat's "Assigned by ARIN" string describes only the legacy IANA 1–1876 block description, not the current managing RIR; RDAP and abuse-contact-finder both resolve source=RIPE) [Confirmed] — https://rdap.db.ripe.net/autnum/777

Allocated

RDAP top-level registration event 1970-01-01 — a known RIPE Unix-epoch placeholder for legacy pre-database resources, not a genuine allocation year; true first-allocation date is Unknown. Last changed 2018-09-04 [Confirmed for the recorded RDAP event; Unknown for the real allocation year] — https://rdap.db.ripe.net/autnum/777

Org status

active per RIPE RDAP status; classified "LEGACY" by bgp.he.net (predates current RIR allocation policy, consistent with a low 3-digit AS number); operator CEA is an active French national research agency [Confirmed] — https://rdap.db.ripe.net/autnum/777, https://www.cea.fr/english

Contacts

no dedicated abuse mailbox published in RIPEstat's abuse-contact-finder; RDAP admin/technical contacts list DSI/SIP, CEA Saclay, F-91191 Gif/Yvette, France [Confirmed for RDAP contact address; Unknown for a dedicated abuse mailbox] — https://rdap.db.ripe.net/autnum/777, https://stat.ripe.net/AS777

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-31 in NANOG mailing-list archives or general web search; dedicated reputation feeds (Spamhaus, Cisco Talos, AbuseIPDB) returned HTTP 403 and were not independently queried, so this is a moderate-confidence null, not a clean bill of health; no abuse contact published in RIPEstat

Network & routing

Network type

legacy institutional/government research-network ASN, not a commercial ISP; PeeringDB record is empty (no IX/facility connections, IPv6 disabled) [Confirmed] — https://www.peeringdb.com/api/net?asn=777

Size

~10 IPv4 prefixes / ~198,656 addresses per RIPEstat (2026-07-18 to 2026-08-01 window); bgp.he.net counts 17 prefixes over a longer historical window covering the same 132.16x.0.0/16 and 192.x.x.x/24 space (window-length difference, not a contradiction); 0 IPv6 prefixes; CAIDA customer cone = 1 ASN (itself), 16 prefixes, 329,728 addresses

[Confirmed] — https://stat.ripe.net/AS777, https://bgp.he.net/AS777, https://asrank.caida.org/asns/777

Routing/peering

CAIDA AS rank 12,678; degree total=1 (provider=1, customer=0, peer=0); single observed upstream AS2200 (RENATER, French NREN) [Likely for upstream identity]; no settlement-free peers; RIS visibility 327/328 IPv4 peers, 0/322 IPv6 peers

[Confirmed] — https://asrank.caida.org/asns/777, https://bgp.he.net/AS777, https://stat.ripe.net/AS777

RPKI

No covering ROA found for any of the ten announced prefixes — RIPEstat RPKI validation (routinator) returns status unknown with zero matching ROAs for each of 132.165.0.0/16, 132.168.0.0/15, 192.33.158.0/24, 192.54.143.0/24, 192.54.205.0/24, 192.54.206.0/24, 192.54.207.0/24, 192.54.208.0/24, 192.54.209.0/24, and 192.93.124.0/24, as of 2026-07-31

[Confirmed] — RIPEstat rpki-validation

Notable usage

legacy /16 space (132.165.0.0/16 through 132.169.0.0/16) plus several 192.x.x.x /24 blocks; reaches the internet solely via AS2200 (RENATER, the French academic/research backbone) rather than commercial transit, consistent with an internal CEA Saclay research-campus network

[Likely] — https://bgp.he.net/AS777

Related ASNs

AS2200 (RENATER — CEA's sole observed upstream/NREN) [Likely] — https://bgp.he.net/AS777

Analyst note

RDAP's 1970-01-01 top-level registration event is a well-documented RIPE placeholder for legacy objects with no recorded creation timestamp, not a real allocation date — recorded here per registry-fact policy but should not be read as CEA's actual join year. AS777 is an internal French government research network (CEA Saclay) reaching the internet via RENATER's backbone, not a public network operator. Abuse-reputation feeds were bot-blocked, so this entry is judged Moderate rather than High confidence.