AS12984 — PILSFREE

AS12984 announces 1 IPv4 prefixes covering 1,024 addresses and 1 IPv6 prefixes.

About this network

A registered association running a city's network, with an IPv6 allocation far larger than its IPv4 one.

What it's used for

• A Czech community internet network operated as a members' association. 1,024 addresses in one IPv4 prefix, one IPv6 prefix, and two observed BGP neighbours.

Notable

• The IPv4 inventory is 185.118.80.0/22, netname CZ-PILSFREE-20150921.
• The IPv6 prefix is 2a06:9280::/29.
• The registered holder's name ends in z. s., the Czech legal form for a voluntary association.
• Three addresses were sampled and none returned a name.

Interesting

• Community networks are built by residents who wire up their own neighbourhoods and register an association to hold the address space, and they exist in the routing table on exactly the same terms as commercial operators. Nothing in BGP distinguishes a volunteer-run city network from a telecom, which is one of the genuinely democratic properties of the system.
• The IPv6 prefix is a /29, the largest an operator ordinarily receives, against 1,024 IPv4 addresses. The ratio is not an anomaly: IPv6 is allocated by policy rather than by demonstrated need, so an association with a thousand IPv4 addresses gets the same block a national carrier would ask for.
• The 2015 date and the 185. range put this registration after IPv4 exhaustion, when 1,024 addresses was close to the maximum a new entrant could obtain. A network serving a whole city on that much space is running carrier NAT or has moved a great deal of traffic to IPv6.
• Two neighbours, which for a community network usually means one commercial transit and one exchange.

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

Announced prefixes

• 185.118.80.0/22
• 2a06:9280::/29

Upstream networks

• AS8251 FreeTel, s.r.o.

Downstream networks

• AS20643 PilsFree servis, s.r.o.

Adjacent networks

• AS8251 FreeTel, s.r.o.
• AS20643 PilsFree servis, s.r.o.