AS12570 — ITSELF Network and internet service provider.

AS12570 announces 29 IPv4 prefixes covering 49,664 addresses and 2 IPv6 prefixes.

About this network

A Czech provider announcing 29 prefixes under a numbered contact handle, with three brands in its reverse zone.

What it's used for

• Internet access and hosting. 49,664 addresses in 29 IPv4 prefixes, two IPv6 prefixes, and 11 observed BGP neighbours.

Notable

• Almost every block shares the netname family CZ-CZNET-, dated from 990707 through 20030327, 20050316, 20060111, 20080611, 20090914 and 20121101.
• The registry contact is not a name but a number: 5610-Tech-and-Admin.
• One block breaks the pattern entirely — 193.17.248.0/22, netname ZEAL-CZ, registered to ZEAL s.r.o.
• Reverse names come from three domains: 254.247.freebone.cz, 213-211-59-254.cust.selfnet.cz and visit.keznews.com.

Interesting

• Seven distinct netname dates across a decade, all under one family, is an unusually legible growth record. The company asked the registry for more space in 1999, 2003, 2005, 2006, 2008, 2009 and 2012, and each request is still visible as its own block.
• A contact recorded as 5610-Tech-and-Admin is the registry's internal handle showing through into the human-readable field. It is maximally durable and tells a reader nothing, which is the trade role accounts always make.
• selfnet.cz alongside an AS called ITSELF is the same idea twice, in two languages' worth of wordplay. freebone.cz is a third name again, and none of them is the registered company — a provider's brands multiply faster than its paperwork.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 80.78.144.0/22
• 80.78.148.0/23
• 80.78.151.0/24
• 80.78.152.0/21
• 88.83.224.0/19
• 89.190.40.0/21
• 89.190.48.0/22
• 89.190.54.0/24
• 89.190.56.0/21
• 109.105.32.0/19
• 185.8.188.0/22
• 193.17.248.0/22
• 195.78.122.0/23
• 212.4.128.0/22
• 212.4.133.0/24
• 212.4.134.0/23
• 212.4.136.0/22
• 212.4.140.0/23
• 212.4.144.0/20
• 212.96.160.0/20
• 212.96.176.0/22
• 212.96.181.0/24
• 212.96.182.0/23
• 212.96.186.0/23
• 212.96.188.0/22
• 213.211.32.0/22
• 213.211.38.0/23
• 213.211.40.0/22
• 213.211.48.0/20
• 2001:4ba8::/29
• 2a0b:bb41::/32

Upstream networks

• AS16246 O2 Czech Republic, a.s.

Downstream networks

• AS213354 INTERNATIONAL HOSTING SOLUTIONS LLP
• AS51424 Jiri Sperl
• AS204886 Metropolitni sit Humpolec spol. s r.o.
• AS197798 Net-Connect s.r.o.
• AS196815 LAN servis s.r.o.
• AS198620 Bralu Jurjanu biedriba
• AS211334 MASTER IT Technologies, a.s.
• AS25192 CZ.NIC, z.s.p.o.
• AS202979 NGA Services, spol. s r.o.

Adjacent networks

• AS16246 O2 Czech Republic, a.s.
• AS213354 INTERNATIONAL HOSTING SOLUTIONS LLP
• AS51424 Jiri Sperl
• AS204886 Metropolitni sit Humpolec spol. s r.o.
• AS197798 Net-Connect s.r.o.
• AS198620 Bralu Jurjanu biedriba
• AS196815 LAN servis s.r.o.
• AS211334 MASTER IT Technologies, a.s.
• AS25192 CZ.NIC, z.s.p.o.
• AS47232 ISP Alliance a.s.
• AS202979 NGA Services, spol. s r.o.