AS43861 CIRCLEB-ASN Circle B B.V.
🇳🇱Org handle: ORG-CBB4-RIPE
RIPE NCCallocated
Announced Prefixes (BGP)
6total
4 IPv42 IPv6
IPv4 Addresses
Allocated (RIR)1,536
Announced (BGP)1,536
IPv6 Addresses
Allocated (RIR)7.1×10²⁹
Announced (BGP)7.9×10²⁸
Routing hygiene
Score 6/100 · Low riskRPKI ROA coverage
100%
no RPKI invalid prefixes
IRR route objects
100%
no origin mismatches
Hijack signals
0
0 announced against others' ROAs, 0 own announced by others
Upstreams
2
diversity 44/100
- All announced prefixes have a valid ROA and a matching IRR route object
Based on 6 announced prefixes, updated daily (2026-10-23). How the score works · RPKI explained
Announced Prefixes
(BGP)6|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | RIPE | 2026-10-24 | |
| Valid | RIPE | 2026-10-24 | |
| Valid | RIPE | 2026-10-24 | |
| Valid | RIPE | 2026-10-24 | |
| Valid | RIPE | 2026-10-24 | |
| Valid | RIPE | 2026-10-24 |
Allocated Prefixes
(RIR)6Prefix | Country | RIR | Status |
|---|---|---|---|
| 45.134.176.0/22 | 🇳🇱 NL | RIPENCC | allocated |
| 91.199.227.0/24 | 🇳🇱 NL | RIPENCC | allocated |
| 185.125.242.0/24 | 🇳🇱 NL | RIPENCC | allocated |
| 2001:678:348::/48 | 🇳🇱 NL | RIPENCC | assigned |
| 2a13:acc0::/29 | 🇳🇱 NL | RIPENCC | allocated |
| 2a13:acc0::/32 | 🇳🇱 NL | RIPE | assigned |
All 6 announced prefixes of AS43861 →
Downstream Customers(1)
| ASN | Name |
|---|---|
| AS209870 | 🇬🇧Cylo Cylo Ltd |
BGP Neighbours
(seen in AS paths)Abuse Contact
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
- How to run an ASPA checkVerify the upstream providers listed above
- IPv4 transfers in the RIPE NCC 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/43861Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/43861" | jq