Autonomous System
AS8399 — SEWAN-FR - SEWAN SAS(FR)
Last fetched
AS8399 is an Autonomous System operated by SEWAN-FR - SEWAN SAS and registered in FR. As of Sun, 06 Sep 2026 12:41:34 GMT, it announces 37 routed IP prefixes and peers with 12 other Autonomous Systems in the WhisperGraph BGP dataset.
Nutrition Label
Routing footprint
AS8399 announces 37 distinct routed prefixes. The 25-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.
- 37.97.64.0/19
- 37.97.96.0/20
- 37.139.120.0/21
- 37.139.124.0/24
- 65.39.64.0/19
- 80.251.96.0/20
- 81.93.0.0/19
- 88.213.224.0/19
- 155.2.128.0/19
- 157.143.128.0/17
- 178.174.96.0/20
- 178.255.160.0/21
- 185.6.92.0/22
- 185.8.252.0/22
- 185.24.140.0/22
- 185.32.208.0/22
- 185.42.176.0/22
- 185.50.52.0/24
- 185.50.53.0/24
- 185.50.54.0/24
- 185.50.55.0/24
- 185.65.248.0/22
- 185.76.216.0/22
- 185.218.208.0/22
- 185.249.20.0/22
Peering ecosystem
12 distinct peers via BGP. The first 12 are listed below.
| Peer ASN | Operator | Country |
|---|---|---|
| AS1299 | TWELVE99 - Arelion Sweden AB | SE |
| AS174 | COGENT-174 - Cogent Communications, LLC | US |
| AS204092 | GRIFON - Association GRIFON | FR |
| AS29632 | NASSIST-AS - Netassist International EOOD | BG |
| AS3257 | GTT-BACKBONE - GTT Communications Inc. | US |
| AS34549 | MEER-AS - meerfarbig GmbH & Co. KG | DE |
| AS35699 | ADAMOEU-AS - Adamo Telecom Iberia S.A. | ES |
| AS48362 | TKSWF-AS - Stadtwerke Feldkirch | AT |
| AS49559 | IPT-1-IX - A-Systems Sp. z o.o. | PL |
| AS50673 | Serverius-as - Serverius Holding B.V. | NL |
| AS56655 | GIGAHOST - Gigahost AS | NO |
| AS6939 | HURRICANE - Hurricane Electric LLC | US |
Blast radius
Count of dependent hostnames if AS8399 disappeared from the routing table.
Blast radius: Computing — check back later. The precompute pipeline refreshes this panel within a few days.
MOAS / hijack watch
Prefixes routed by AS8399 that another Autonomous System also announces. A non-empty list is one of the strongest BGP-hijack signals available without active probes.
No active MOAS conflicts. Every prefix announced by AS8399 is unique to AS8399 in the current routing snapshot.
Threat posture
Related pages
Pivot deeper into the graph from AS8399.
Cypher and MCP
Reproduce the headline metric directly against graph.whisper.security:
MATCH (a:ASN {name: "AS8399"})-[:HAS_NAME]->(n:ASN_NAME)
OPTIONAL MATCH (a)-[:HAS_COUNTRY]->(c:COUNTRY)
RETURN a.name AS asn, n.name AS operator, c.name AS countryOr query Whisper from your own LLM workflow via the Whisper MCP server.