Autonomous system
AS57167 CITYHOST-AS
Unclassified RIPE
Summary
Cityhost
isp residential ukraine
CITYHOST-AS is operated by Cityhost LLC.
What it's used for
- The address space carries residential and small business internet access, evidenced by netnames such as
UA-CITYHOST-20210806andCITYHOSTUA-DCassociated with registrants Oleg Rivtin and Cityhost NOC. - The AS announces 1024 IPv4 addresses across 4 prefixes and 1 IPv6 prefix, maintaining 2 observed neighbours; this low neighbour count relative to the address inventory indicates an access network rather than a transit provider.
- Traffic from this AS consists of subscriber eyeballs for residential and small business customers in Ukraine, managed by a local ISP with an estimated workforce of 11–50 employees.
Notable
- Registrants across all announced prefixes consistently identify Oleg Rivtin, Maksym Rivtin, and Cityhost LLC, aligning with the AS holder.
- The address inventory is composed of four distinct /24 blocks and one /48 IPv6 prefix, all located in Ukraine.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-30, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 4 prefixes · 1.02K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| UA | Ukraine | 6 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS57167- Registry name
- CITYHOST-AS
- Registrant
- CHTUA-MNT
- Abuse contact
- abuse@cityhost.net.ua
- Registered
- 2011-08-11
- Last changed
- 2022-08-15
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 7 valid, 0 with no ROA
- ROAs
- 8 authorising AS57167
- ASPA
- no ASPA record
- IRR
- 100% registered · 7 of 7 announcements
- Route objects
- 9 naming AS57167
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 447 networks and 1,849 prefixes, as published 2026-10-30. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere