$ query “AS9141” --type=asn → 1 result(s)

AS9141 · AS9141

P4 Sp. z o.o.

AS9141 is run by P4 Sp. z o.o. and is a major transit provider, established in Poland. The system announces an impressive 1.6 million IPv4 addresses, including a /12, and supports IPv6. Most of its address space is geolocated to Poland.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #6 in Poland — Top 10 by reach within country

Basic Information

Country
🇵🇱 Poland
Category
Internet Service Provider
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Last Changed
March 04, 2026
Last Seen
April 28, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
76 / 28
IPv6 Prefixes (raw / aggregated)
13 / 2
IPv4 Addresses
1 612 288
Largest IPv4 Prefix
/12 (1 048 576 addresses)
Largest IPv6 Prefix
/27
Geolocated Countries
🇵🇱 Poland (3 084 544 IPs)
Prefix Changed
March 04, 2026

Reputation

Reputation
Good — 23 flagged IPs out of 1 612 288 total (0.00%)
Open Proxies
1 known open proxies in this network

Connectivity Summary

Upstream Providers
2 upstreams providing transit
Peers
3 networks exchanging traffic without transit
Downstream Customers
66 downstreams buying transit
Unclassified
4 unclassified BGP neighbors
Degree
75 unique BGP neighbors
Reach
576 networks in customer cone

Upstream Providers (2)

  • AS174 — COGENT-174 (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)

Prefix Lists

IPv4 Prefixes (76 total)

  • 89.64.0.0/12 (1 048 576 addresses (/12 prefix))
  • 31.178.0.0/15 (131 072 addresses (/15 prefix))
  • 87.206.0.0/15 (131 072 addresses (/15 prefix))
  • 84.10.0.0/16 (65 536 addresses (/16 prefix))
  • 94.172.0.0/16 (65 536 addresses (/16 prefix))
  • 85.222.0.0/17 (32 768 addresses (/17 prefix))
  • 94.75.64.0/18 (16 384 addresses (/18 prefix))
  • 178.73.0.0/18 (16 384 addresses (/18 prefix))
  • 83.144.64.0/18 (16 384 addresses (/18 prefix))
  • 95.158.64.0/18 (16 384 addresses (/18 prefix))
  • 81.18.192.0/19 (8 192 addresses (/19 prefix))
  • 91.150.192.0/19 (8 192 addresses (/19 prefix))
  • 212.76.32.0/19 (8 192 addresses (/19 prefix))
  • 213.134.160.0/19 (8 192 addresses (/19 prefix))
  • 92.244.32.0/19 (8 192 addresses (/19 prefix))
  • 77.236.0.0/19 (8 192 addresses (/19 prefix))
  • 31.186.192.0/19 (8 192 addresses (/19 prefix))
  • 217.119.64.0/20 (4 096 addresses (/20 prefix))
  • 83.175.176.0/20 (4 096 addresses (/20 prefix))
  • 188.93.160.0/21 (2 048 addresses (/21 prefix))
  • 185.182.244.0/22 (1 024 addresses (/22 prefix))
  • 195.34.208.0/22 (1 024 addresses (/22 prefix))
  • 194.187.40.0/22 (1 024 addresses (/22 prefix))
  • 193.47.158.0/23 (512 addresses (/23 prefix))
  • 91.247.147.0/24 (256 addresses (/24 prefix))
  • 193.238.24.0/24 (256 addresses (/24 prefix))
  • 193.47.160.0/24 (256 addresses (/24 prefix))
  • 91.238.60.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (13 total)

  • 2a02:a300::/27
  • 2001:4050::/32