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
Upstreams
Networks seen providing transit to this one
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS3356 Lumen (Level 3) | 🇺🇸 US | 70,669 | 2,070 | 215 | CAIDA |
| AS1299 Arelion (fka. Telia Carrier) | 🇸🇪 SE | 68,628 | 134 | 43 | CAIDA |
| AS56662 Marcin Gondek | 🇵🇱 PL | 0 | 0 | 19 | inferred |
Peers
Adjacencies that look settlement-free rather than transit
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS6939 Hurricane Electric LLC | 🇺🇸 US | 52,792 | 235 | 463 | CAIDA |
| AS20485 TransTeleCom JSC | 🇷🇺 RU | 28,322 | 85 | 16 | CAIDA |
| AS33891 Core-Backbone GmbH | 🇩🇪 DE | 24,877 | 1 | 19 | CAIDA |
| AS37721 Virtual Technologies & Solutions | 🇧🇫 BF | 21,728 | 64 | 16 | CAIDA |
| AS15830 Equinix, Inc. | 🇳🇱 NL | 18,233 | 1,082 | 1 | CAIDA |
| AS50673 Serverius Holding B.V. | 🇳🇱 NL | 16,074 | 129 | 36 | CAIDA |
| AS34549 meerfarbig GmbH & Co. KG | 🇩🇪 DE | 15,508 | 48 | 57 | CAIDA |
| AS56655 Gigahost AS | 🇳🇴 NO | 15,415 | 33 | 2 | CAIDA |
| AS34927 iFog GmbH | 🇨🇠CH | 15,402 | 38 | 13 | CAIDA |
| AS24482 SG.GS | 🇸🇬 SG | 4,720 | 45 | 40 | CAIDA |
| AS17639 Converge ICT Solutions Inc. | 🇵🇠PH | 270 | 567 | 40 | CAIDA |
| AS49559 A-Systems Sp. z o.o. | 🇵🇱 PL | 145 | 11 | 15 | CAIDA |
| AS6696 VERIXI SA | 🇧🇪 BE | 144 | 49 | 16 | CAIDA |
| AS12779 IT.Gate S.p.A. | 🇮🇹 IT | 76 | 25 | 16 | CAIDA |
| AS1836 green.ch AG | 🇨🇠CH | 43 | 78 | 16 | CAIDA |
| AS29632 Netassist International EOOD | 🇧🇬 BG | 42 | 0 | 48 | CAIDA |
| AS50304 Blix Solutions AS | 🇳🇴 NO | 34 | 97 | 70 | CAIDA |
| AS48362 Stadtwerke Feldkirch | 🇦🇹 AT | 15 | 8 | 15 | CAIDA |
| AS48185 team.blue NV | 🇧🇪 BE | 14 | 1 | 17 | CAIDA |
| AS204092 Association GRIFON | 🇫🇷 FR | 10 | 2 | 40 | CAIDA |
| AS50300 CustodianDC Limited | 🇬🇧 GB | 9 | 39 | 39 | CAIDA |
| AS206499 LOCIX LIMITED | 🇬🇧 GB | 4 | 3 | 18 | CAIDA |
| AS401753 BIXCE Inc | 🇻🇬 VG | 2 | 1 | 44 | CAIDA |
| AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC) | 🇳🇱 NL | 0 | 7 | 40 | CAIDA |
| AS213241 TECHIT.BE SRL | 🇧🇪 BE | 0 | 14 | 24 | CAIDA |
Downstreams
Networks this one appears to provide transit to
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS205235 Labitat | 🇩🇰 DK | 5 | 1 | 651 | CAIDA |
| AS207727 Asbjorn Sloth Tonnesen trading as a5n | 🇩🇰 DK | 0 | 3 | 267 | CAIDA |
| AS204141 K-Net Forening | 🇩🇰 DK | 0 | 2 | 119 | CAIDA |
| AS201697 Tobias Fonsmark trading as Semaphor | 🇩🇰 DK | 0 | 2 | 108 | CAIDA |
| AS12654 RIPE NCC - RIS | 🇳🇱 NL | 0 | 16 | 6 | CAIDA |
Relationships marked inferred come from where the two networks sit on the AS paths the collectors see, which is a guess and is wrong for some of them. The rest are stated by CAIDA's published inference over a much wider set of collectors.