AS13094 — SFO-IX-AS

AS13094 announces 1 IPv4 prefixes covering 512 addresses and 0 IPv6 prefixes.

About this network

Hostnames built with underscores, which are not valid characters in a hostname.

What it's used for

• A Russian internet exchange point. 512 addresses in one IPv4 prefix, 70 observed BGP neighbours, and no IPv6 announced.

Notable

• Two of three sampled addresses returned names: host91221180128.milecom.ru and host91221181126.milecom.ru.
• The netname is SFO-IX; the registrant is a company named in neither the handle nor the holder field.
• Seventy observed BGP neighbours behind a single /23.
• First observed in the routing archive in October 2001.

Interesting

• Underscores separate the octets where every other generated name in this range uses hyphens. The hyphen convention is not a style choice: underscores are outside the character set hostnames are defined over, and strict resolvers and some client libraries reject them. These names work in practice because most software is lenient, which is exactly why the mistake survives.
• Seventy neighbours against 512 addresses is the clearest exchange-point signature there is. The space is the shared fabric that member networks peer across; the traffic never terminates here, so the address count says nothing about the volume.
• Four different organisation names appear across the handle, the holder, the registrant and the reverse zone. Exchange points are often run by one company on another's infrastructure, and every layer keeps its own.

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

Announced prefixes

• 91.221.180.0/23

Upstream networks

• AS6939 Hurricane Electric LLC
• AS37721 Virtual Technologies & Solutions
• AS50629 LWLcom GmbH
• AS50673 Serverius Holding B.V.
• AS25091 IP-Max SA
• AS208972 GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI
• AS56655 Gigahost AS
• AS24482 SG.GS
• AS57463 NetIX Communications JSC
• AS33891 Core-Backbone GmbH

Downstream networks

• AS56451 Telekey-S Ltd
• AS31695 Limited Company "Intermedia"
• AS50427 Orion Telecom LLC
• AS58067 JOINT-STOCK COMPANY "MOSCOW ENERGY COMMUNICATION NODE"
• AS15880 Private entrepreneur Chikalin Anatoly Nikolaevich
• AS48327 Ray-Svyaz Ltd.
• AS52175 Magellan Telecom Kuzbass Ltd.
• AS31257 Orion Telecom LLC
• AS50029 Telecom Ltd.
• AS51086 Scientific and production association "SCAT" Ltd.
• AS41143 OOO Ob-Telecom
• AS12418 Quantum CJSC
• AS208573 Bondarev Andrei Gennadievich
• AS30729 TRANSFER Ltd.
• AS39121 Eniseyneftegas Territorial Industrial Technical Management of Communication LLC
• AS44347 Limited Company "SiNT"
• AS203493 Egor Timoshenko
• AS201786 OOO ComLine
• AS39927 E-Light-Telecom Ltd.
• AS197482 DoubleGIS LLC
• AS47530 Novokuznetsk Telecom Ltd
• AS33892 LLC "Severskelectrosvyaz"
• AS203784 Fiber Telecom Ltd
• AS48858 JSC "ER-Telecom Holding"
• AS42773 Nemerov Evgeniy Vladimirovish PE

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS208972 GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI
• AS57463 NetIX Communications JSC
• AS203493 Egor Timoshenko
• AS49673 Truenetwork LLC
• AS58067 JOINT-STOCK COMPANY "MOSCOW ENERGY COMMUNICATION NODE"
• AS50673 Serverius Holding B.V.
• AS56451 Telekey-S Ltd
• AS31695 Limited Company "Intermedia"
• AS50427 Orion Telecom LLC
• AS31257 Orion Telecom LLC
• AS48327 Ray-Svyaz Ltd.
• AS15880 Private entrepreneur Chikalin Anatoly Nikolaevich
• AS52175 Magellan Telecom Kuzbass Ltd.
• AS50029 Telecom Ltd.
• AS51086 Scientific and production association "SCAT" Ltd.
• AS12418 Quantum CJSC
• AS41143 OOO Ob-Telecom
• AS208573 Bondarev Andrei Gennadievich
• AS42773 Nemerov Evgeniy Vladimirovish PE
• AS48858 JSC "ER-Telecom Holding"
• AS56655 Gigahost AS
• AS39121 Eniseyneftegas Territorial Industrial Technical Management of Communication LLC
• AS44347 Limited Company "SiNT"
• AS30729 TRANSFER Ltd.

Internet exchanges

• MSK-IX Moscow — Moscow, Russia
• GNM Internet Exchange Amsterdam — Amsterdam, Netherlands
• MSK-IX Novosibirsk — Novosibirsk, Russia