AS42541 FIBERBY Fiberby ApS
🇩🇰Org handle: ORG-FA448-RIPE
RIPE NCCallocatedASPA Published
Announced Prefixes (BGP)
6total
5 IPv41 IPv6
IPv4 Addresses
Allocated (RIR)11,776
Announced (BGP)11,008
IPv6 Addresses
Allocated (RIR)6.3×10²⁹
Announced (BGP)6.3×10²⁹
Routing hygiene
Score 7/100 · 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 28/100
- Routes concentrated on one upstream (83% of routes)
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 | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 |
Allocated Prefixes
(RIR)9Prefix | Country | RIR | Status |
|---|---|---|---|
| 89.23.224.0/19 | 🇩🇰 DK | RIPENCC | allocated |
| 89.23.224.0/23 | 🇩🇰 DK | RIPE | assigned |
| 185.10.220.0/22 | 🇩🇰 DK | RIPENCC | allocated |
| 185.10.220.0/24 | 🇩🇰 DK | RIPE | assigned |
| 185.10.222.0/24 | 🇩🇰 DK | RIPE | assigned |
| 185.10.223.0/24 | 🇩🇰 DK | RIPE | assigned |
| 193.104.135.0/24 | 🇩🇰 DK | RIPENCC | allocated |
| 193.106.164.0/22 | 🇩🇰 DK | RIPENCC | allocated |
| 2a03:5440::/29 | 🇩🇰 DK | RIPENCC | allocated |
All 6 announced prefixes of AS42541 →
Upstream Providers(3)
BGP Neighbours
(seen in AS paths)Upstreams (2)
Networks AS42541 hands its own prefixes to: transit providers, or peers at an exchange.
Downstreams (4)
Networks whose own prefixes AS42541 passes on: usually its customers.
Other adjacent networks (1)
Adjacent to AS42541 in the transit part of AS paths: peers, providers or customers.
- AS6939Hurricane Electric11
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/42541Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/42541" | jq