AS25515 — CTCNET-AS PJSC Rostelecom. Moscow branch

AS25515 announces 18 IPv4 prefixes covering 46,592 addresses and 1 IPv6 prefixes.

About this network

CTCNET-AS is the autonomous system for PJSC Rostelecom, the largest digital services provider in Russia.

What it's used for

• The address space carries residential access traffic, evidenced by reverse DNS entries such as pppoe-static.mosoblast.rt.ru and ipoe-static.mosoblast.rt.ru.
• With 46,592 IPv4 addresses announced across 18 prefixes and only 5 observed neighbours, the high address-to-neighbour ratio indicates an access network serving end-users rather than a transit provider.

Notable

• Registrants consistently identify the holder as PJSC Rostelecom or its predecessor OJSC Rostelecom, aligning with the AS handle CTCNET-AS.
• The inventory is finely subdivided into 18 IPv4 prefixes and 1 IPv6 prefix, reflecting a large, segmented corporate estate for a major national operator.
• Rostelecom underwent a rebranding in 2021, transitioning from OJSC to PJSC status, which is reflected in the varying registrant names across the prefix history.

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

Announced prefixes

• 77.51.176.0/20
• 77.51.192.0/18
• 85.94.0.0/22
• 85.94.18.0/23
• 85.94.20.0/22
• 85.94.24.0/22
• 89.109.232.0/21
• 89.109.240.0/20
• 90.154.120.0/21
• 91.188.223.0/24
• 95.73.56.0/21
• 146.19.98.0/24
• 185.141.236.0/23
• 185.202.109.0/24
• 193.3.188.0/24
• 213.140.224.0/19
• 217.107.96.0/21
• 217.107.104.0/23
• 2a00:56c0:40d::/48

Upstream networks

• AS12389 PJSC Rostelecom

Downstream networks

• AS8557 PJSC Rostelecom
• AS49261 Lekstar Communication LLC
• AS52006 CJSC Moscow Brewing Company
• AS47335 ABN LTD

Adjacent networks

• AS12389 PJSC Rostelecom
• AS8557 PJSC Rostelecom
• AS49261 Lekstar Communication LLC
• AS52006 CJSC Moscow Brewing Company
• AS47335 ABN LTD

Routing security

• RPKI: 21 valid, 0 invalid and 0 not-found announcements; 22 ROAs.
• ASPA: none published.
• IRR: 67% of announcements registered; 28 route objects.
• Listed in as-sets: AS-BLOCK-SET, AS-BLOCKED-RU, AS-CTC, AS-HURRICANE, AS-HURRICANEV6, AS-INDUKERN, AS-ROSTELECOM.