AS39603 — P4NET P4 Sp. z o.o.

Network type: residential

AS39603 announces 9 IPv4 prefixes covering 565,248 addresses and 1 IPv6 prefixes.

About this network

P4NET is operated by Play (P4 Sp. z o.o.), a major Polish telecommunications provider.

What it's used for

• The address space carries residential and mobile subscriber traffic, evidenced by reverse DNS entries such as user-31-174-128-0.play-internet.pl and user-static-164-126-128-0.mobile.play-internet.pl.
• The network announces 565,248 IPv4 addresses across 9 prefixes and 1 IPv6 prefix, while maintaining 30 observed neighbours; this high address-to-neighbour ratio indicates an access/eyeball network rather than a transit provider.
• Traffic consists of consumer broadband (DSL/cable) and mobile data sessions for Play's subscriber base in Poland.

Notable

• Registrants for most prefixes are P4 Sp. z o.o. or P4 Team, consistent with the announcer; the 164.126.0.0/15 block is registered to Various Registries (Maintained by ARIN) with netname NET164.
• The inventory includes a mix of large /15 blocks and smaller /17 to /19 allocations, with netnames like PL-PROJECT4 and PLAYMBB reflecting different acquisition or service eras.

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

Announced prefixes

• 5.173.0.0/17
• 5.173.128.0/18
• 5.173.192.0/19
• 31.174.0.0/15
• 46.112.0.0/15
• 89.108.192.0/18
• 94.254.128.0/17
• 109.243.0.0/16
• 164.126.0.0/15
• 2a00:1981::/32

Upstream networks

• AS1299 Arelion Sweden AB
• AS3356 Level 3 Parent, LLC
• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC
• AS29314 VECTRA S.A.
• AS9141 P4 Sp. z o.o.
• AS33891 Core-Backbone GmbH
• AS24482 SG.GS
• AS34927 iFog GmbH
• AS24748 Atman Sp. z o.o.
• AS201054 Stowarzyszenie e-Poludnie

Downstream networks

• AS15507 P4 Sp. z o.o.
• AS57811 Redge Technologies sp. z o.o.

Adjacent networks

• AS1299 Arelion Sweden AB
• AS3356 Level 3 Parent, LLC
• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC
• AS15507 P4 Sp. z o.o.
• AS29314 VECTRA S.A.
• AS57811 Redge Technologies sp. z o.o.
• AS9141 P4 Sp. z o.o.
• AS24482 SG.GS
• AS33891 Core-Backbone GmbH
• AS34927 iFog GmbH
• AS24748 Atman Sp. z o.o.
• AS201054 Stowarzyszenie e-Poludnie
• AS29632 Netassist International EOOD

Routing security

• RPKI: 20 valid, 0 invalid and 0 not-found announcements; 20 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 20 route objects.
• Listed in as-sets: AS-P4NET_POZ, AS-PLIX, AS-PLIX-CONNECTED, AS-RETN-ACTUAL-V4, AS-SET39603, AS-TPIX, AS-VECTRA, AS202554:AS-1-PL, AS24748:AS-IX, AS24748:AS-THINX, AS29535:AS-TPIX, AS39603:AS-P4NET, AS50263:AS-1-IX-EU, AS5617:AS-PL, AS5617:AS-PL-TRANSIT, AS9141:AS-P4NET.

Internet exchanges

• TPIX - Internet Exchange — Warsaw, Poland
• Equinix Internet Exchange Warsaw — Warsaw, Poland
• Thinx IX — Warsaw, Poland