Autonomous system
AS21453 FLEX-AS
Residential RIPE
Summary
Flex
isp residential vpn russia
FLEX-AS is operated by Flex Ltd., a Russian internet service provider.
What it's used for
- The address space carries dynamic VPN and residential access traffic, as evidenced by reverse DNS entries such as
178-167-32-0.dynvpn.flex.ruand95-183-80-0.dynvpn.flex.ru. - With 117,248 IPv4 addresses announced across 27 prefixes and 55 observed neighbours, the ratio suggests a significant access network providing connectivity to end-users rather than a pure transit provider.
Notable
- Registrants for the majority of prefixes are listed as Flex Ltd., with netnames consistently formatted as
RU-FLEX-YYYYMMDD, aligning with the AS holder. - One prefix,
31.31.64.0/21, is registered to VAENGA Ltd. under the netnameRU-VAENGATELECOM-20110317, indicating a distinct ownership or lease arrangement within the announced space. - The inventory includes a single IPv6 prefix
2a01:4200::/30alongside the extensive IPv4 holdings.
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
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| MSK-IX Moscow | Moscow, Russia | 195.208.210.7 |
Transit providers
14 upstream, 12 downstream and 39 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 27 prefixes · 117K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| RU | Russian Federation | 28 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS21453- Registry name
- FLEX-AS
- Registrant
- FLEX-MNT
- Abuse contact
- abuse@flex.ru
- Registered
- 2002-06-26
- Last changed
- 2026-05-21
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 19 valid, 0 with no ROA
- ROAs
- 20 authorising AS21453
- ASPA
- no ASPA record
- IRR
- 100% registered · 19 of 19 announcements
- Route objects
- 26 naming AS21453
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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: 443 networks and 1,784 prefixes, as published 2026-10-19. 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