Organization
Politechnika Czestochowska
CZESTMAN-COM-AS
Registered
Jul 22, 2002
24 years ago
IPv4 Prefixes
2
1,536 addresses
IPv6 Prefixes
1
65,536 × /48
BGP Neighbours
23
11 upstream/peer · 8 downstream · 5 collector-only
Registration
AS Number AS25084 AS Name CZESTMAN-COM-AS Organization Politechnika Czestochowska Organization ID ORG-PC2-RIPE Address ul. Dabrowskiego 71, 42-200, Czestochowa, POLAND Country Poland (PL) Registry RIPE NCC Allocated Jul 22, 2002 Record Created Jul 22, 2002 Last Updated Mar 16, 2025 Status
active
WHOIS Server whois.ripe.net AS Description CZESTMAN-COM-AS - Politechnika Czestochowska, PL Remarks Non-academic AS dedicated to Metropolitan Area Network, CzestMAN, Czestochowa University of Technology, Czestochowa, POLAND, CzestMAN's COM PEERS Abuse Email [email protected] Abuse Phone +48 34 3250317 IPv4 Prefixes
2 prefixes · 1,536 addresses Routing data as of 2026-10-07 00:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 212.87.240.0/23 | 212.87.240.0 – 212.87.241.255 | 512 |
| 212.87.244.0/22 | 212.87.244.0 – 212.87.247.255 | 1,024 |
IPv6 Prefixes
1 prefix · 65,536 × /48 Routing data as of 2026-10-07 00:00 UTC
| Prefix | Addresses |
|---|---|
| 2a01:699:: | 296 |
BGP Neighbours
23 unique neighbours · 11 upstream/peer · 8 downstream · 5 collector-only. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries. Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers. Networks seen to the right of this AS in BGP paths — networks whose routes it carries, typically its customers (downstreams). Networks seen to the left of this AS only when they peer directly with a RIPE RIS route collector, so the adjacency may be an artefact of that peering; many of them also appear on the downstream side. Upstream & peer side (11)
AS Name AS paths IPv4 sightings IPv6 sightings AS196844 PIONIER-AS-ams-ix Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center 1,077 2,650 199 AS13293 PIONIER-AS-COM Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center 465 871 83 AS6939 HURRICANE - Hurricane Electric LLC 185 189 147 AS5617 TPNET Orange Polska Spolka Akcyjna 64 125 0 AS33891 CORE-BACKBONE Core-Backbone GmbH 13 29 3 AS6204 ZET-NET TMRC GROUP SRL 8 14 1 AS14840 AS14840 - BR.Digital Telecom 4 0 10 AS264409 AS264409 - Huge Solucoes Corporativas Ltda 2 0 2 AS15373 CZESTMAN-AS Politechnika Czestochowska 1 2 1 AS22356 AS22356 - Durand do Brasil Ltda 1 0 1 AS201054 EPIX-PolMix Stowarzyszenie e-Poludnie 1 0 1 Downstream side (8)
AS Name AS paths IPv4 sightings IPv6 sightings AS202667 KJG-AS-PL Klasztor OO Paulinow Jasna Gora 280 688 0 AS41056 APUS-AS APUS Piotr Sejfried 272 344 0 AS209860 MyNet-MB-PL-AS My Net Michal Bronczkowski 234 619 0 AS200272 X-KOM x-kom sp. z o.o. 224 282 0 AS206241 EREGION-AS-PL STOWARZYSZENIE DO SPRAW ROZWOJU SPOLECZENSTWA INFORMACYJNEGO SUBREGIONU POLNOCNEGO WOJEWODZTWA SLASKIEGO 172 222 0 AS44454 CSMNP-AS Czestochowska Spoldzielnia Mieszkaniowa "Nasza Praca" 159 609 0 AS15373 CZESTMAN-AS Politechnika Czestochowska 125 518 125 AS196730 TELSAT TELSAT.TV Sp. z o.o. 3 18 0 Collector-only (5)
Raw RDAP Response
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