AS42541 Fiberby ApS 🇩🇰 DK
Announcing 6 prefixes, seen at the RIS collectors.
IPv4 prefixes
5
11,008 (43 × /24)
IPv6 prefixes
1
8 × /32
Upstreams
3
transit providers observed
Peers
25
settlement-free adjacencies
Downstreams
5
transit customers observed
Customer cone
9
ASes reachable through it
Registry and operator data
- AS number
- AS42541
- Name
- Fiberby ApS
- Organisation
- Fiberby
- Country
- 🇩🇰 DK
- RIR
- RIPENCC
- Allocated
- 2009-11-13
- Network type
- Cable/DSL/ISP
- Traffic levels
- 100-200Gbps
- Scope
- Regional
- Peering policy
- Open
- IRR as-set
- RIPE::AS-FIBERBY
- Website
- https://fiberby.dk/
- Looking glass
- https://bgp.tools/lg/42541
- PeeringDB
- net/5143
- Exchanges
- 14
- Facilities
- 4
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Whois
Fetched from whois.ripe.net
as-block: AS42383 - AS42953 descr: RIPE NCC ASN block remarks: These AS Numbers are assigned to network operators in the RIPE NCC service region. mnt-by: RIPE-NCC-HM-MNT created: 2026-06-23T05:12:23Z last-modified: 2026-06-23T05:12:23Z source: RIPE aut-num: AS42541 as-name: FIBERBY org: ORG-FA448-RIPE remarks: +-------------------------------------------+ remarks: | Fiberby ApS AS-FIBERBY | remarks: +-------------------------------------------+ remarks: remarks: Present at following IXP's: remarks: * AMS-IX remarks: * DE-CIX Frankfurt remarks: * NL-ix (@ Interxion CPH1) remarks: * LocIX Frankfurt remarks: * Netnod Copenhagen (formerly COMIX) remarks: * Netnod Stockholm remarks: * STHIX-CPH remarks: remarks: Private peering available at: remarks: * GlobalConnect Taastrup, Horskaetten 3-5, Taastrup, DK remarks: * GlobalConnect Vesterbro, Vesterbrogade 149, Copenhagen V, DK remarks: * Interxion CPH1, Industriparken 20A, Ballerup, DK remarks: * TDC Borups Alle remarks: * TDC Vesterbro remarks: * TDC Valby remarks: remarks: as-set announced: AS-FIBERBY remarks: remarks: For more information check http://as42541.peeringdb.com/ remarks: remarks: +-------------------------------------------+ remarks: | Transit | remarks: +-------------------------------------------+ remarks: 1299: Telia Carrier mp-import: afi any.unicast from AS1299 accept ANY mp-export: afi any.unicast to AS1299 announce AS-FIBERBY remarks: remarks: 3356: Level3 mp-import: afi any.unicast from AS3356 accept ANY mp-export: afi any.unicast to AS3356 announce AS-FIBERBY remarks: remarks: 6939: Hurricane Electric mp-import: afi ipv6.unicast from AS6939 accept ANY mp-export: afi ipv6.unicast to AS6939 announce AS-FIBERBY remarks: remarks: +-------------------------------------------+ remarks: | Private Peering | remarks: +-------------------------------------------+ remarks: 714: Apple mp-import: afi any.unicast from AS714 action pref=120; accept AS-APPLE mp-export: afi any.unicast to AS714 announce AS-FIBERBY remarks: remarks: 16509: Amazon mp-import: afi any.unicast from AS16509 action pref=120; accept AS-AMAZON mp-export: afi any.unicast to AS16509 announce AS-FIBERBY remarks: remarks: 20940: Akamai mp-import: afi any.unicast from AS20940 action pref=120; accept AS-AKAMAI mp-export: afi any.unicast to AS20940 announce AS-FIBERBY remarks: remarks: 31027: GlobalConnect mp-import: afi any.unicast from AS31027 action pref=120; accept AS-GCNET mp-export: afi any.unicast to AS31027 announce AS-FIBERBY remarks: remarks: 32934: Facebook / Meta mp-import: afi any.unicast from AS32934 action pref=120; accept AS-FACEBOOK mp-export: afi any.unicast to AS32934 announce AS-FIBERBY remarks: remarks: 39642: Norlys mp-import: afi any.unicast from AS39642 action pref=120; accept AS-SE-NET mp-export: afi any.unicast to AS39642 announce AS-FIBERBY remarks: remarks: 46489: Twitch mp-import: afi any.unicast from AS46489 action pref=120; accept AS-TWITCH mp-export: afi any.unicast to AS46489 announce AS-FIBERBY remarks: remarks: +-------------------------------------------+ remarks: | Internet Exchanges | remarks: +-------------------------------------------+ remarks: DE-CIX Frankfurt import-via: AS6695 from AS-ANY action pref=120; accept ANY export-via: AS6695 to AS-ANY announce AS-FIBERBY mp-import: afi ipv4.unicast from AS42541:AS-FIBERBY-DECIX-FRA-PEERS-v4 action pref=120; accept ANY mp-export: afi ipv4.unicast to AS42541:AS-FIBERBY-DECIX-FRA-PEERS-v4 announce AS-FIBERBY mp-import: afi ipv6.unicast from AS42541:AS-FIBERBY-DECIX-FRA-PEERS-v6 action pref=120; accept ANY mp-export: afi ipv6.unicast to AS42541:AS-FIBERBY-DECIX-FRA-PEERS-v6 announce AS-FIBERBY remarks: remarks: AMS-IX: Amsterdam Internet Exchange import-via: AS6777 from AS-ANY EXCEPT AS-FIBERBY-AMSIX-NO-RS action pref=120; accept ANY export-via: AS6777 to AS-ANY EXCEPT AS-FIBERBY-AMSIX-NO-RS announce AS-FIBERBY mp-import: afi ipv4.unicast from AS-FIBERBY-AMSIX-PEERS-v4 action pref=120; accept ANY mp-export: afi ipv4.unicast to AS-FIBERBY-AMSIX-PEERS-v4 announce AS-FIBERBY mp-import: afi ipv6.unicast from AS-FIBERBY-AMSIX-PEERS-v6 action pref=120; accept ANY mp-export: afi ipv6.unicast to AS-FIBERBY-AMSIX-PEERS-v6 announce AS-FIBERBY remarks: remarks: NL-IX: The Interconnect Exchange (Pan European; connected @ Interxion CPH1) import-via: AS34307 from AS-ANY action pref=120; accept ANY export-via: AS34307 to AS-ANY announce AS-FIBERBY mp-import: afi ipv4.unicast from AS-FIBERBY-NLIX-PEERS-v4 action pref=120; accept ANY mp-export: afi ipv4.unicast to AS-FIBERBY-NLIX-PEERS-v4 announce AS-FIBERBY mp-import: afi ipv6.unicast from AS-FIBERBY-NLIX-PEERS-v6 action pref=120; accept ANY mp-export: afi ipv6.unicast to AS-FIBERBY-NLIX-PEERS-v6 announce AS-FIBERBY remarks: remarks: COMIX: Netnod Copenhagen / Stockholm (Routeserver uses the same ASN) import-via: AS52005 from AS-ANY EXCEPT AS-FIBERBY-COMIX-NO-RS action pref=120; accept ANY export-via: AS52005 to AS-ANY EXCEPT AS-FIBERBY-COMIX-NO-RS announce AS-FIBERBY mp-import: afi ipv4.unicast from AS-FIBERBY-COMIX-PEERS-v4 action pref=120; accept ANY mp-export: afi ipv4.unicast to AS-FIBERBY-COMIX-PEERS-v4 announce AS-FIBERBY mp-import: afi ipv6.unicast from AS-FIBERBY-COMIX-PEERS-v6 action pref=120; accept ANY mp-export: afi ipv6.unicast to AS-FIBERBY-COMIX-PEERS-v6 announce AS-FIBERBY remarks: remarks: STHIX-CPH: Stockholm Internet Exchange Copenhagen import-via: AS57151 from AS-ANY action pref=120; accept ANY export-via: AS57151 to AS-ANY announce AS-FIBERBY mp-import: afi ipv4.unicast from AS-FIBERBY-STHIX-CPH-PEERS-v4 action pref=120; accept ANY mp-export: afi ipv4.unicast to AS-FIBERBY-STHIX-CPH-PEERS-v4 announce AS-FIBERBY mp-import: afi ipv6.unicast from AS-FIBERBY-STHIX-CPH-PEERS-v6 action pref=120; accept ANY mp-export: afi ipv6.unicast to AS-FIBERBY-STHIX-CPH-PEERS-v6 announce AS-FIBERBY remarks: remarks: DE-CIX Oslo import-via: AS201526 from AS-ANY action pref=120; accept ANY export-via: AS201526 to AS-ANY announce AS-FIBERBY mp-import: afi ipv4.unicast from AS42541:AS-FIBERBY-DECIX-OSL-PEERS-v4 action pref=120; accept ANY mp-export: afi ipv4.unicast to AS42541:AS-FIBERBY-DECIX-OSL-PEERS-v4 announce AS-FIBERBY mp-import: afi ipv6.unicast from AS42541:AS-FIBERBY-DECIX-OSL-PEERS-v6 action pref=120; accept ANY mp-export: afi ipv6.unicast to AS42541:AS-FIBERBY-DECIX-OSL-PEERS-v6 announce AS-FIBERBY remarks: remarks: DE-CIX Helsinki import-via: AS201560 from AS-ANY action pref=120; accept ANY export-via: AS201560 to AS-ANY announce AS-FIBERBY mp-import: afi ipv4.unicast from AS42541:AS-FIBERBY-DECIX-HEL-PEERS-v4 action pref=120; accept ANY mp-export: afi ipv4.unicast to AS42541:AS-FIBERBY-DECIX-HEL-PEERS-v4 announce AS-FIBERBY mp-import: afi ipv6.unicast from AS42541:AS-FIBERBY-DECIX-HEL-PEERS-v6 action pref=120; accept ANY mp-export: afi ipv6.unicast to AS42541:AS-FIBERBY-DECIX-HEL-PEERS-v6 announce AS-FIBERBY remarks: remarks: DE-CIX Copenhagen import-via: AS201561 from AS-ANY action pref=120; accept ANY export-via: AS201561 to AS-ANY announce AS-FIBERBY mp-import: afi ipv4.unicast from AS42541:AS-FIBERBY-DECIX-CPH-PEERS-v4 action pref=120; accept ANY mp-export: afi ipv4.unicast to AS42541:AS-FIBERBY-DECIX-CPH-PEERS-v4 announce AS-FIBERBY mp-import: afi ipv6.unicast from AS42541:AS-FIBERBY-DECIX-CPH-PEERS-v6 action pref=120; accept ANY mp-export: afi ipv6.unicast to AS42541:AS-FIBERBY-DECIX-CPH-PEERS-v6 announce AS-FIBERBY remarks: remarks: LocIX: LocIX Frankfurt import-via: AS202409 from AS-ANY action pref=120; accept ANY export-via: AS202409 to AS-ANY announce AS-FIBERBY mp-import: afi ipv4.unicast from AS-FIBERBY-LOCIX-PEERS-v4 action pref=120; accept ANY mp-export: afi ipv4.unicast to AS-FIBERBY-LOCIX-PEERS-v4 announce AS-FIBERBY mp-import: afi ipv6.unicast from AS-FIBERBY-LOCIX-PEERS-v6 action pref=120; accept ANY mp-export: afi ipv6.unicast to AS-FIBERBY-LOCIX-PEERS-v6 announce AS-FIBERBY remarks: remarks: +-------------------------------------------+ remarks: | Customers | remarks: +-------------------------------------------+ remarks: 12654: RIPE RIS mp-import: afi any.unicast from AS12654 accept AS-RIS mp-export: afi any.unicast to AS12654 announce ANY remarks: remarks: 19281: Quad9 mp-import: afi any.unicast from AS19281 accept AS-QUAD9-ANYCAST mp-export: afi any.unicast to AS19281 announce ANY remarks: remarks: 201697: Semaphor mp-import: afi any.unicast from AS201697 accept AS-SEMAPHOR mp-export: afi any.unicast to AS201697 announce ANY remarks: remarks: 204141: K-net mp-import: afi any.unicast from AS204141 accept AS204141:AS-KNETDK mp-export: afi any.unicast to AS204141 announce ANY remarks: remarks: 205235: Labitat mp-import: afi any.unicast from AS205235 accept AS-LABITAT mp-export: afi any.unicast to AS205235 announce ANY remarks: remarks: 208647: BornHack mp-import: afi any.unicast from AS208647 accept AS208647 mp-export: afi any.unicast to AS208647 announce ANY remarks: remarks: +-------------------------------------------+ remarks: | Contact | remarks: +-------------------------------------------+ remarks: * operational issues, contact noc@fiberby.net remarks: * peering inquiries, contact peering@fiberby.net remarks: * security issues, contact abuse@fiberby.net remarks: * end-user issues, contact support@fiberby.dk remarks: remarks: +-------------------------------------------+ remarks: | Fiberby has an open peering policy | remarks: +-------------------------------------------+ remarks: admin-c: FIBY-RIPE tech-c: FIBY-RIPE status: ASSIGNED mnt-by: RIPE-NCC-END-MNT mnt-by: FIBERBY created: 2009-11-13T13:13:21Z last-modified: 2026-04-09T13:36:17Z source: RIPE # Filtered organisation: ORG-FA448-RIPE org-name: Fiberby ApS country: DK reg-nr: 28292139 org-type: LIR address: Otto Busses Vej 3A address: 2450 address: Kobenhavn SV address: DENMARK phone: +4533230099 admin-c: ASTO admin-c: LLP21-RIPE abuse-c: FIB13-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: FIBERBY mnt-by: RIPE-NCC-HM-MNT mnt-by: FIBERBY created: 2012-11-09T15:08:45Z last-modified: 2026-05-13T07:34:31Z source: RIPE # Filtered role: Fiberby Network Operation Center address: Fiberby ApS address: Otto Busses Vej 3A address: 2450 K�benhavn SV address: Denmark abuse-mailbox: abuse@fiberby.net admin-c: ASTO admin-c: LLP21-RIPE tech-c: ASTO tech-c: LLP21-RIPE nic-hdl: FIBY-RIPE mnt-by: FIBERBY created: 2012-11-09T16:25:49Z last-modified: 2022-03-23T11:08:59Z source: RIPE # Filtered