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Autonomous System

AS39603

Play

Announced IPs
565,248
CIDR prefixes
9
ASN
AS39603

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

69/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Traffic level 1-5Tbps
Geographic scope Regional
Traffic ratio Mostly Inbound
Peering policy Selective

Present at 5 internet exchanges: Equinix Warsaw, THINX Warsaw, TPIX PL, 1-IX EU, 1-PL FREE

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
31.174.0.0/15 131.1K
99.0%
Play PL Mazovia Warsaw
46.112.0.0/15 131.1K
99.3%
Play PL Mazovia Warsaw
164.126.0.0/15 131.1K
100.0%
Play PL Mazovia Warsaw
109.243.0.0/16 65.5K
98.3%
Play PL Mazovia Warsaw
5.173.0.0/17 32.8K
99.3%
Play PL Silesia Gliwice
94.254.128.0/17 32.8K
93.7%
Play PL Lesser Poland Krakow
5.173.128.0/18 16.4K
98.9%
Play PL Mazovia Warsaw
89.108.192.0/18 16.4K
77.8%
Play PL
5.173.192.0/19 8.2K
99.3%
Play PL Mazovia Warsaw

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS39603 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
89.108.192.0/18 28,529 2026-09-10 18:07:46
94.254.128.0/17 28,230 2026-09-10 18:07:47
89.108.208.0/21 26,494 2026-09-10 18:07:46
89.108.200.0/21 26,420 2026-09-10 18:07:46
94.254.160.0/19 17,911 2026-09-10 18:07:34
5.173.192.0/19 17,831 2026-09-10 18:07:52
5.173.0.0/17 17,684 2026-09-10 18:08:24
31.174.0.0/15 17,551 2026-09-10 18:08:24
94.254.144.0/20 17,305 2026-09-10 18:07:52
46.113.0.0/16 17,115 2026-09-10 18:08:24
164.126.0.0/15 16,233 2026-09-10 18:07:46
94.254.128.0/20 15,925 2026-09-10 18:07:46
5.173.128.0/18 14,970 2026-09-10 18:07:51
94.254.224.0/20 14,861 2026-09-10 18:07:51
94.254.192.0/19 14,855 2026-09-10 18:07:51
46.112.0.0/16 14,422 2026-09-10 18:08:41
109.243.192.0/18 13,478 2026-09-10 18:08:06
109.243.0.0/16 11,211 2026-09-10 18:08:23
109.243.128.0/17 10,066 2026-09-10 18:07:46

Frequently Asked Questions

What is AS39603?

AS39603 is an Autonomous System Number assigned to Play. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS39603 announce?

AS39603 announces 565.2K IPv4 addresses distributed across 9 routed CIDR prefixes. The network is registered in Poland.

Who operates AS39603?

AS39603 is operated by Play. The organization is based in Poland. You can view all IP ranges and related ASNs on the organization page.

What country is AS39603 registered in?

AS39603 is registered in Poland. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-09-10 18:11:07 UTC
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