AS51399 — PL-FIBERWAY-AS Fiberway Sp. z o.o.

Network type: residential

AS51399 announces 6 IPv4 prefixes covering 4,864 addresses and 1 IPv6 prefixes.

About this network

PL-FIBERWAY-AS is operated by Fiberway Sp. z o.o.

What it's used for

• The address space carries residential and business customer traffic, evidenced by reverse DNS entries such as host-91-103-145-0.fiberway.pl and cgn-14-254.fiberway.pl, and the netname PL-FIBERWAY-CUSTOMERS.
• The AS announces 4864 IPv4 addresses across 6 prefixes and 1 IPv6 prefix, while maintaining 14 observed neighbours; this ratio of address space to peering partners indicates an access network providing last-mile connectivity.
• Traffic from this AS consists of subscriber eyeballs and web/API endpoints for Fiberway's regional broadband customers in Poland.

Notable

• All registrants for the announced prefixes are consistent with the announcer, listing Fiberway Sp. z o.o. for netnames including PL-FIBERWAY2-20180622, PL-FIBERWAY-20100811, and PL-FIBERWAY-CUSTOMERS.
• The inventory is composed of multiple /22 and smaller blocks, including a /24 (110.172.146.0/24) and a /23 (91.217.0.0/23), reflecting a segmented allocation for different customer segments or acquisition periods.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 91.103.144.0/22
• 91.217.0.0/23
• 91.218.200.0/22
• 91.218.208.0/22
• 110.172.146.0/24
• 185.157.12.0/22
• 2a07:a080::/29

Upstream networks

• AS1299 Arelion Sweden AB
• AS9002 RETN Limited
• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS24482 SG.GS
• AS201054 Stowarzyszenie e-Poludnie
• AS29632 Netassist International EOOD

Adjacent networks

• AS1299 Arelion Sweden AB
• AS9002 RETN Limited
• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS24482 SG.GS
• AS201054 Stowarzyszenie e-Poludnie
• AS29632 Netassist International EOOD

Routing security

• RPKI: 7 valid, 0 invalid and 0 not-found announcements; 8 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 12 route objects.
• Listed in as-sets: AS-ACCKRK, AS-CIX, AS-CIX-LOCAL, AS-EPIX, AS-EPIX-LOCAL, AS-EPIXW-LOCAL, AS-FIBERWAY, AS-HYPERNET-PL, AS-INTER-KOM, AS-KIKE, AS-KIKE-LOCAL, AS-LUKANET, AS-RETN-ACTUAL-V4, AS-RETN-ACTUAL-V6, AS-SECO, AS-TPIX, AS29535:AS-TPIX, AS5617:AS-PL, AS5617:AS-PL-TRANSIT.

Internet exchanges

• Equinix Internet Exchange Warsaw — Warsaw, Poland