AS401821 CYGNUS-NETWORK-A - Cygnus Networks LLC
🇺🇸ARINassigned
Announced Prefixes (BGP)
6total
0 IPv46 IPv6
IPv4 Addresses
Allocated (RIR)256
Announced (BGP)0
IPv6 Addresses
Allocated (RIR)3.8×10³⁰
Announced (BGP)3.8×10³⁰
Announced Prefixes
(BGP)6|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | RIPE | 2026-10-27 | |
| Valid | RIPE | 2026-10-27 | |
| Valid | RIPE | 2026-10-27 | |
| Valid | RIPE | 2026-10-27 | |
| Valid | RIPE | 2026-10-27 | |
| Valid | RIPE | 2026-10-27 |
Allocated Prefixes
(RIR)8Prefix | Country | RIR | Status |
|---|---|---|---|
| 23.141.100.0/24 | 🇺🇸 US | ARIN | allocated |
| 2602:f5ed::/40 | 🇺🇸 US | ARIN | allocated |
| 2a07:e800::/29 | 🇹🇷 TR | RIPENCC | allocated |
| 2a09:780::/29 | 🇹🇷 TR | RIPENCC | allocated |
| 2a09:c40::/29 | 🇹🇷 TR | RIPENCC | allocated |
| 2a09:fc0::/29 | 🇹🇷 TR | RIPENCC | allocated |
| 2a09:1e40::/29 | 🇹🇷 TR | RIPENCC | allocated |
| 2a09:2400::/29 | 🇹🇷 TR | RIPENCC | allocated |
All 6 announced prefixes of AS401821 →
BGP Neighbours
(seen in AS paths)Upstreams (1)
Networks AS401821 hands its own prefixes to: transit providers, or peers at an exchange.
- AS62610Zenlayer6
ASPA
No ASPA
External Links
Learn more
- What is an ASN?Autonomous systems, ASN ranges and how they are assigned
- RPKI and route origin validationWhat the RPKI badges on the prefix list mean
- ASPA explainedWhy AS401821 should publish an ASPA object
- IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/401821Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/401821" | jq