Summary

  • RIPE records identify the Omsk branch through AS41843 (as-name ERTH-OMSK-AS), a role contact named 'Network Operation Center CJSC ER-Telecom Company Omsk branch' at 25 Zhukov str., 644024, Omsk, and dedicated address space registered to the branch.
  • The branch operates as a downstream of the holding-level transit network AS9049 (ERTH-TRANSIT-AS), with which it shares organisation ORG-RA21-RIPE, registered as JSC "ER-Telecom Holding" in Perm.
  • Registry objects mix the historic legal form 'CJSC' with the current 'JSC', reflecting the March 2015 corporate form change; the ambiguity is unresolved from registry data alone.
  • Route and prefix counts differ across aggregators (61–65 IPv4 prefixes, 4–16 IPv6 prefixes, roughly 66,816 IPv4 addresses), so no single count should be hardened into fact.

The core evidence is registry-structural rather than transactional. The RIPE database entry for AS41843 shows as-name ERTH-OMSK-AS, status ASSIGNED, maintained by RIPE-NCC-END-MNT and RAID-MNT and linked to organisation ORG-RA21-RIPE https://stat.ripe.net/resource/AS41843. Mirrored copies of the same aut-num object carry the remark 'JSC "ER-Telecom Holding" Omsk branch', an upstream relationship to AS9049 (import from AS9049 accept ANY; export to AS9049 announce AS-OMSK), peering with Omsk-area networks AS31643, AS41440, AS41771, AS47246, AS49404 and AS57629, and customer relationships with AS39735 and AS49880 https://whois.ipip.net/AS41843. An aggregator reproduction points, via its abuse-contact field, to the holding's Dom.ru brand domain, and adds the organisation block for ORG-RA21-RIPE: JSC "ER-Telecom Holding", headquartered in Perm, LIR type, reg-nr 1065902028620 https://ipgeolocation.io/browse/asn/AS41843.

The as-set AS-OMSK, described in the IRR as 'JSC "ER-Telecom Holding" Omsk branch' and located in Omsk, Russia, lists AS41843 as its principal member alongside AS49880, AS39735, AS15870, AS201485, AS30729, AS206820, AS50969, AS52086, AS199901, AS60655, AS47247 and AS215077. It was created on 2006-11-02 and last modified on 2024-07-02, maintained by RAID-MNT and ERTH-MAGISTR https://ipv4.bgp.he.net/irr/as-set/AS-OMSK. That 2024 modification date is the clearest available signal that the branch's routing object set was still being actively administered well after the holding began consolidating its regional subsidiaries.

Address space tells the same story. Multiple RIPE netblocks are registered to 'JSC Er-telecom Holding Omsk Branch' with ASSIGNED PA status, including 5.164.32.0/22, 79.136.160.0/22, 91.144.168.0/22, 92.255.176.0/20, 109.194.112.0/20, 176.214.0.0/20, 188.232.96.0/19 and 188.232.128.0/18 https://ipregistry.co/AS41843. Aggregator counts for what AS41843 actually announces differ: one source reports 65 IPv4 routes and 4 IPv6 routes https://ipgeolocation.io/browse/asn/AS41843, another 61 IPv4 ranges and 4 IPv6 ranges https://ipregistry.co/AS41843, and a third 65 IPv4 prefixes, 16 IPv6 prefixes and about 66,816 IPv4 addresses https://whois.ipip.net/AS41843. The disagreement is itself the finding: the branch holds substantial dedicated address space, but how much of it is originated today is verifiable only against live BGP data, which these sources do not agree on.

The transit path runs through the holding. AS9049 is ERTH-TRANSIT-AS, described as the 'JSC "ER-Telecom Holding" Transit AS', under the same ORG-RA21-RIPE organisation; its routing policy lists upstreams including AS9002 (RETN), AS57304 (RetnNet), AS1299 (Arelion/Twelve99) and AS6762 (Telecom Italia Sparkle), plus Omsk-area interactions such as AS47246 (OmskTransitTelecom) https://robtex.com/en/as-numbers/AS9049. Routing views show Omsk-branch-labelled prefixes — for example 188.234.72.0/21 and 188.234.72.0/24, described there with the older 'CJSC' form — visible via AS9049, with AS41843 appearing as a related neighbour https://bgp.tools/as/9049. Economically, this means the branch's external reachability depends on group-level transit capacity and its upstream commercial terms, not on any contract the branch itself is publicly documented to hold.

Corporate background closes the frame. ER-Telecom's parent legal entity is JSC (AO) "ER-Telecom Holding", headquartered in Perm, originating in the 2001 merger of Elsvyaz and Raid-Internet, delivering services under the Dom.ru, Dom.ru Business, Enforta and Electronic City brands https://ru.wikipedia.org/wiki/%D0%AD%D0%A0-%D0%A2%D0%B5%D0%BB%D0%B5%D0%BA%D0%BE%D0%BC. The holding was created in 2006 to manage regional projects, took over 14 regional subsidiaries in 2010, changed legal form from CJSC to JSC in March 2015, and has more recently absorbed additional subsidiaries — Vebra LLC, Intertax LLC, JSC Binom-TV, Intek STC LLC, Svod LLC, Dianet LLC and Rapir Telecom LLC — under a shareholder decision https://www.akm.ru/eng/news/er-telecom-holding-takes-over-several-companies/. The Omsk branch, on this evidence, is not a residual independent company but a regional operating node inside a single consolidating legal entity.

The unresolved tension sits in the registry itself. The role object NOCC3-RIPE still carries the historic 'CJSC' legal form https://whois.ipip.net/AS41843 https://ipgeolocation.io/browse/asn/AS41843, while organisation objects use 'JSC' and prefix descriptions alternate between the two. Whether this reflects a stale registry contact or an actively maintained network-operations function for the Omsk region cannot be settled from registry data alone. What would settle it: an updated RIPE role object, or routing evidence showing that the listed Omsk peerings remain live.