AS12577 — MMC-AT-AS Muehlgasse 14E

AS12577 announces 2 IPv4 prefixes covering 9,216 addresses and 1 IPv6 prefixes.

About this network

720 BGP neighbours for 9,216 addresses, and a reverse-name scheme that cannot tell its two address blocks apart.

What it's used for

• Internet access and transit in Austria. 9,216 addresses in two IPv4 prefixes, one IPv6 prefix, and 720 observed BGP neighbours.

Notable

• 212.108.32.0/19 is netname AT-MMC-990603; 185.104.224.0/22 is AT-MMC-20150616, registered through mmc hostmaster.
• The IPv6 announcement is 2a00:1618::/29, four times larger than the /32 most networks of this size hold.
• Sampled addresses answer sta-040-000.mmc.at, sta-047-255.mmc.at, sta-225-255.mmc.at and sta-226-254.mmc.at.

Interesting

• 720 neighbours against nine thousand addresses is the highest ratio in this stretch of the number range by a wide margin, and it is what heavy exchange-point peering looks like from a route collector. A network that joins an internet exchange's route server picks up every other member as a recorded neighbour at once, so the count measures how sociable the network is rather than how large.
• The reverse names encode only the last two octets. 212.108.40.0 becomes sta-040-000 and 185.104.225.255 becomes sta-225-255, so an address in one block and an address in the other with matching tails would be given the same name. The scheme was designed when there was one block to name.
• sta is the usual shorthand for a static assignment, which marks these as addresses handed out to stay put rather than leased by the session.

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

Announced prefixes

• 185.104.224.0/22
• 212.108.32.0/19
• 2a00:1618::/29

Upstream networks

• AS33891 Core-Backbone GmbH
• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS3303 Swisscom (Schweiz) AG
• AS34549 meerfarbig GmbH & Co. KG
• AS31543 myNet GmbH
• AS15935 ha-vel internet s.r.o.
• AS57463 NetIX Communications JSC
• AS9002 RETN Limited

Downstream networks

• AS215628 Xenox IT & Kommunikations GmbH
• AS198400 IP Austria Communication GmbH
• AS211283 Genius IT GmbH
• AS207929 IP Austria Communication GmbH
• AS44832 AlphaPhone Telekommunikations GmbH

Adjacent networks

• AS215628 Xenox IT & Kommunikations GmbH
• AS33891 Core-Backbone GmbH
• AS174 Cogent Communications, LLC
• AS198400 IP Austria Communication GmbH
• AS6939 Hurricane Electric LLC
• AS3303 Swisscom (Schweiz) AG
• AS34549 meerfarbig GmbH & Co. KG
• AS207929 IP Austria Communication GmbH
• AS211283 Genius IT GmbH
• AS44832 AlphaPhone Telekommunikations GmbH
• AS57463 NetIX Communications JSC
• AS31543 myNet GmbH
• AS15935 ha-vel internet s.r.o.
• AS212024 Marc Schmitt
• AS20485 Joint Stock Company TransTeleCom
• AS17639 Converge ICT Solutions Inc.
• AS9002 RETN Limited

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• Vienna Internet Exchange — Vienna, Austria