AS197479 GREFNET-AS "GREFNET" Miroslaw Grefkowicz

GREFNET-AS "GREFNET" Miroslaw Grefkowicz · registered in Poland

IPv4 addresses1,0242 prefixes · <0.001% of announced IPv4

Rank in Poland#824largest network in PL by IPv4 space, of 2,091 · <0.01% of PL

Rank worldwide#39,419of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryPoland2,145 ASNs registered there

Open AS197479 in ASN lookup Look up an IP in this network (91.222.144.1) All networks in Poland

IPv4 prefixes

All 2 prefixes, in address order.

91.222.144.0/23
91.222.146.0/23

Similar-sized networks in Poland

ASNNameIPv4 addresses

AS197146#821 MULTICOM-AS PPHU Multicom Kumor Pawel1,024

AS197162#822 NEO-TRIX P.P.U.H. Neo-Trix Halina Smagowska1,024

AS197294#823 NETonSKY NETonSKY.pl JANIAK PIOTR1,024

AS197552#825 PL-LUB-WSPA-AS Wyzsza Szkola Przedsiebiorczosci i Administracji w Lublinie1,024

AS197572#826 ASNCITYNET CITYNET MARCIN SOBALA - PIOTR MISIUDA1,024

AS197682#827 NOM1044-AS Niezalezny Operator Miedzystrefowy Sp zoo1,024

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