AS42763
FPUH Czajen Krzysztof Czaja
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.
- Baseline (neutral) 65
- Trust score 65 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 2 internet exchanges: Equinix Warsaw, THINX Warsaw
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 77.87.0.0/21 | 2.0K |
1.0%
|
FPUH Czajen Krzysztof Czaja | PL | Subcarpathia | Mielec |
| 91.193.120.0/22 | 1.0K |
7.2%
|
FPUH Czajen Krzysztof Czaja | PL | Subcarpathia | Borowa |
| 193.33.174.0/23 | 512 |
11.7%
|
FPUH Czajen Krzysztof Czaja | PL | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS42763 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 77.87.5.0/24 | 37,784 | 2026-07-29 04:11:50 |
| 77.87.4.0/24 | 35,283 | 2026-07-29 04:11:50 |
| 77.87.1.0/24 | 35,264 | 2026-07-29 04:11:50 |
| 77.87.0.0/24 | 35,204 | 2026-07-29 04:11:50 |
| 77.87.6.0/24 | 33,344 | 2026-07-29 04:11:50 |
| 77.87.2.0/24 | 33,325 | 2026-07-29 04:11:50 |
| 91.193.122.0/24 | 33,282 | 2026-07-29 04:11:50 |
| 91.193.120.0/22 | 33,037 | 2026-07-29 04:01:50 |
| 77.87.3.0/24 | 33,020 | 2026-07-29 04:11:50 |
| 91.193.123.0/24 | 32,954 | 2026-07-29 04:11:50 |
| 91.193.120.0/24 | 32,911 | 2026-07-29 04:11:50 |
| 77.87.7.0/24 | 32,910 | 2026-07-29 04:11:50 |
| 91.193.121.0/24 | 32,858 | 2026-07-29 04:11:50 |
| 193.33.175.0/24 | 32,522 | 2026-07-29 04:12:21 |
| 193.33.174.0/24 | 32,505 | 2026-07-29 04:12:21 |
| 193.33.174.0/23 | 30,239 | 2026-07-29 04:01:50 |
| 77.87.0.0/21 | 16,998 | 2026-07-29 04:01:50 |
Frequently Asked Questions
What is AS42763?
AS42763 is an Autonomous System Number assigned to FPUH Czajen Krzysztof Czaja. 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 AS42763 announce?
AS42763 announces 3.6K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in Poland.
Who operates AS42763?
AS42763 is operated by FPUH Czajen Krzysztof Czaja. The organization is based in Poland. You can view all IP ranges and related ASNs on the organization page.
What country is AS42763 registered in?
AS42763 is registered in Poland. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
