AS15373 CZESTMAN-AS Politechnika Czestochowska

CZESTMAN-AS Politechnika Czestochowska · registered in Poland

IPv4 addresses4,6083 prefixes · <0.001% of announced IPv4

Rank in Poland#263largest network in PL by IPv4 space, of 2,091 · 0.02% of PL

Rank worldwide#14,177of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryPoland2,145 ASNs registered there

Open AS15373 in ASN lookup Look up an IP in this network (212.87.224.1) All networks in Poland

IPv4 prefixes

All 3 prefixes, in address order.

212.87.224.0/20
212.87.251.0/24
212.87.253.0/24

IPv6 prefixes

All 1 prefix.

2a01:698::/32

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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