AS51155 TBTELECOM Citylink Telecom Sp. z o.o.

TBTELECOM Citylink Telecom Sp. z o.o. · registered in Poland

IPv4 addresses5,1202 prefixes · <0.001% of announced IPv4

Rank in Poland#235largest network in PL by IPv4 space, of 2,091 · 0.03% of PL

Rank worldwide#13,352of 79,396 networks with IPv4

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

CountryPoland2,145 ASNs registered there

Open AS51155 in ASN lookup Look up an IP in this network (46.227.36.1) All networks in Poland

IPv4 prefixes

All 2 prefixes, in address order.

46.227.36.0/22
178.19.176.0/20

IPv6 prefixes

All 1 prefix.

2a02:26e8::/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