AS39028 — ULSK-AS

AS39028 announces 11 IPv4 prefixes covering 27,392 addresses and 1 IPv6 prefixes.

About this network

The AS handle ULSK-AS is held by JSC "ER-Telecom Holding", specifically its Ulyanovsk branch.

What it's used for

• The address space carries residential and business subscriber traffic, evidenced by reverse DNS entries such as dynamic.ulsk.ertelecom.ru and static-business.ulsk.ertelecom.ru.
• With 27,392 IPv4 addresses announced across 15 prefixes and only 1 observed neighbour, the network functions as an access provider rather than a transit hub.
• Traffic consists of subscriber eyeballs for broadband internet access, with specific segments allocated for PPPoE dynamic and static business connections.

Notable

• Registrants consistently identify JSC "ER-Telecom Holding" and its Ulyanovsk Branch, aligning with the AS holder.
• The inventory is finely subdivided into /20, /21, and /23 blocks, reflecting site-by-site segmentation for different access technologies and customer tiers.
• One reverse DNS record points to rostov.ertelecom.ru, indicating shared infrastructure or historical allocation within the broader ER-Telecom network.

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

Announced prefixes

• 5.3.64.0/20
• 5.164.0.0/20
• 5.166.240.0/21
• 5.167.56.0/21
• 94.181.16.0/21
• 109.195.192.0/20
• 146.247.0.0/23
• 176.212.240.0/21
• 176.213.104.0/21
• 188.187.227.0/24
• 188.233.192.0/20
• 2a02:2698:8400::/38

Upstream networks

• AS9049 JSC "ER-Telecom Holding"

Adjacent networks

• AS9049 JSC "ER-Telecom Holding"

Routing security

• RPKI: 3 valid, 0 invalid and 33 not-found announcements; 1 ROAs.
• ASPA: none published.
• IRR: 97% of announcements registered; 69 route objects.
• Listed in as-sets: AS-BLOCK-SET, AS-BLOCKED-RU, AS-ERTH-CITIES, AS-HURRICANEV6, AS-RETN-ACTUAL-V4, AS-RETN-ACTUAL-V6, AS-ULYANOVSK, AS209141:AS-RUCUST.