AS204388 ZDZ-KATOWICE ZAKLAD DOSKONALENIA ZAWODOWEGO W KATOWICACH

ZDZ-KATOWICE ZAKLAD DOSKONALENIA ZAWODOWEGO W KATOWICACH · registered in Poland

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in Poland#1,375largest network in PL by IPv4 space, of 2,091 · <0.01% of PL

Rank worldwide#62,154of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountryPoland2,145 ASNs registered there

Open AS204388 in ASN lookup Look up an IP in this network (195.187.42.1) All networks in Poland

IPv4 prefixes

All 1 prefix, in address order.

195.187.42.0/24

IPv6 prefixes

All 1 prefix.

2001:678:620::/48

Similar-sized networks in Poland

ASNNameIPv4 addresses

AS203369#1372 KONMET-NETWORK KONMET sp. z o.o.256

AS203688#1373 INELO-AS INELO Polska spolka z ograniczona odpowiedzialnoscia256

AS203756#1374 Techalnd Techland Sp. z o.o.256

AS204961#1376 ON4-AS ON4 sp. z o.o.256

AS205268#1377 AS-DIOMAR Diomar sp. z o.o.256

AS206006#1378 pwst-as Panstwowa Wyzsza Szkola Techniczno - Ekonomiczna im. ks. Bronislawa Markiewicza w Jaroslawiu256

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources