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WorldIP.io
Autonomous System

AS43939

Netia SA

Announced IPs
43,008
CIDR prefixes
5
ASN
AS43939

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 v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Geographic scope Europe
Traffic ratio Heavy Inbound
Peering policy Open
IRR record AS-SET-KLM-WROC

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
90.156.0.0/17 32.8K
99.8%
Netia SA PL Lower Silesia Wroclaw
87.99.32.0/19 8.2K
99.9%
Netia SA PL Lower Silesia Wroclaw
185.2.36.0/22 1.0K
99.0%
Netia SA PL — —
78.31.166.0/23 512
0.0%
Netia SA PL — —
91.195.232.0/23 512
100.0%
Netia SA PL — —

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS43939 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
78.31.166.0/23 59,687 2026-11-13 16:08:18
91.195.232.0/23 57,488 2026-11-13 16:08:30
90.156.0.0/17 56,590 2026-11-13 16:08:30
87.99.32.0/19 56,397 2026-11-13 16:08:30
185.2.36.0/22 40,691 2026-11-13 16:08:18
90.156.98.20/32 1 2026-10-11 20:06:50

Frequently Asked Questions

What is AS43939?

AS43939 is an Autonomous System Number assigned to Netia SA. 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 AS43939 announce?

AS43939 announces 43.0K IPv4 addresses distributed across 5 routed CIDR prefixes. The network is registered in Poland.

Who operates AS43939?

AS43939 is operated by Netia SA. The organization is based in Poland. You can view all IP ranges and related ASNs on the organization page.

What country is AS43939 registered in?

AS43939 is registered in Poland. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-11-13 16:39:05 UTC
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