AS12757 — IPTRON

AS12757 announces 4 IPv4 prefixes covering 2,816 addresses and 1 IPv6 prefixes.

About this network

17 IPv6 prefixes from one /40, announced as a doubling ladder from /46 up to /41.

What it's used for

• Hosting and connectivity from Estonia. 2,816 addresses in four IPv4 prefixes, 17 IPv6 prefixes, and four observed BGP neighbours.

Notable

• The IPv6 announcements begin with 2a03:5880::/40 and continue :100::/46, :104::/48, :105::/48, :106::/47, :108::/45, :110::/44, :120::/43, :140::/42, :180::/41.
• Dated netnames EE-IPTRONNET-20110919 and EE-IPTRONNET-20120524 cover the two largest IPv4 blocks.
• 176.124.247.0/24 is registered to OU version6.net and 194.0.51.0/24 to Monitooring OU.
• Reverse names follow the address exactly: 188.227.250.0 answers as 188-227-250-0.iptron.net.

Interesting

• That IPv6 run is one range, not ten allocations. Each prefix is twice the size of the one before it, which is what you get when a block that is not a power of two has to be expressed in CIDR: the tool takes the largest prefix that fits, then the next, and the sizes double as it walks up. The /40 above them is the aggregate the pieces come from.
• Three different registrants in a four-prefix inventory says this AS carries other companies' space as well as its own. version6.net and Monitooring OU are separate registry entries; whether they are subsidiaries or customers, their blocks reach the internet through here.
• Reverse names built by substituting dashes for dots are generated, not typed. They confirm the network runs its own zones, and they make an address's forward and reverse forms trivially convertible in either direction.

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

Announced prefixes

• 5.44.191.0/24
• 176.124.247.0/24
• 188.227.248.0/21
• 194.0.51.0/24
• 2a03:5880::/32

Upstream networks

• AS1257 Tele2 Sverige AB
• AS2586 Elisa Eesti AS
• AS6939 Hurricane Electric LLC

Adjacent networks

• AS1257 Tele2 Sverige AB
• AS2586 Elisa Eesti AS
• AS6939 Hurricane Electric LLC

Internet exchanges

• Tallinn Governmental Internet Exchange — Tallinn, Estonia