AS13174 — MTSNET Moscow, Russia

AS13174 announces 10 IPv4 prefixes covering 11,520 addresses and 0 IPv6 prefixes.

About this network

The reverse names put the last octet first, and a hand-set nameserver sits in the middle of them.

What it's used for

• A network of a large mobile and fixed-line operator in the Russian Federation. 11,520 addresses across ten IPv4 prefixes, one observed BGP neighbour, and no IPv6 announced.

Notable

• 213.87.20.0 answers 0.20.mts.ru and 213.87.3.255 answers 255.3.mts.ru: the final octet becomes the first label.
• One block uses hyphens instead, as infrastructure-0-45.mtsnet.ru, and another prefixes h-.
• 213.87.50.254 answers ns2.mts.ru, a name nothing generated.
• Netnames are MTSNET, MTSNET2, MTS-IT, RU-MTU-20081003 and MTSRETAIL-RU, the last registered to JSC "Russian Telephone Company" alongside AO "RTK" NOC abuse.

Interesting

• Reversing the octets matches the order of the reverse-DNS tree itself, where addresses are looked up backwards. It reads wrong to a person and right to the resolver, and only two octets appear at all, so the name is ambiguous outside its own zone.
• Four naming schemes across ten blocks, plus one address with a real hostname, is a zone assembled by different teams at different times with nothing enforcing consistency.
• One block's registrant names the same company twice, spelled out with an English legal-form abbreviation and again as an initialism with the transliterated one, on a netname pointing at a retail arm rather than the network operator.

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

Announced prefixes

• 91.207.84.0/24
• 91.216.167.0/24
• 194.54.148.0/22
• 213.87.0.0/21
• 213.87.16.0/20
• 213.87.32.0/23
• 213.87.36.0/22
• 213.87.44.0/22
• 213.87.48.0/22
• 213.87.52.0/24

Upstream networks

• AS8359 MTS PJSC

Adjacent networks

• AS8359 MTS PJSC

Routing security

• RPKI: 9 valid, 0 invalid and 3 not-found announcements; 12 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 21 route objects.
• Listed in as-sets: AS-BEER, AS-BLOCK-SET, AS-BLOCKED-RU, AS-GLOBEINTERNET-CLIENTS, AS-GLOBEINTERNET-CLIENTS, AS-MTSNET, AS197068:AS-CUST, AS50406:AS-MWS-SP.