AS21453 — FLEX-AS

Network type: residential

AS21453 announces 19 IPv4 prefixes covering 117,248 addresses and 1 IPv6 prefixes.

About this network

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.ru and 95-183-80-0.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 netname RU-VAENGATELECOM-20110317, indicating a distinct ownership or lease arrangement within the announced space.
• The inventory includes a single IPv6 prefix 2a01:4200::/30 alongside the extensive IPv4 holdings.

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

Announced prefixes

• 31.31.64.0/21
• 80.84.112.0/20
• 80.252.128.0/19
• 88.84.192.0/24
• 88.84.194.0/23
• 88.84.196.0/22
• 88.84.200.0/21
• 88.84.209.0/24
• 88.84.210.0/23
• 88.84.212.0/22
• 88.84.216.0/21
• 94.253.0.0/18
• 94.253.64.0/20
• 94.253.96.0/19
• 95.183.64.0/18
• 178.57.224.0/19
• 178.167.0.0/17
• 185.5.148.0/22
• 212.7.224.0/19
• 2a01:4200::/30

Upstream networks

• AS12389 PJSC Rostelecom
• AS35598 INETCOM CARRIER LLC
• AS9002 RETN Limited
• AS1299 Arelion Sweden AB
• AS28917 Fiord Networks, UAB
• AS20764 CJSC RASCOM
• AS62255 BiMajLink d.o.o.
• AS8641 LLC "Nauka-Svyaz"
• AS29076 Citytelecom LLC
• AS57304 JSC "RetnNet"
• AS24482 SG.GS
• AS49673 Truenetwork LLC
• AS37721 Virtual Technologies & Solutions
• AS208972 GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI

Downstream networks

• AS48149 Ivanteevskie telecommunicacii Ltd
• AS34975 Azimut-R Ltd.
• AS201646 Flex-l Ltd
• AS57489 LLC "Telecom-Uslugi"
• AS41783 Informational technologies and electronic communications LLC
• AS43567 UG-TELECOM Ltd.
• AS216335 OOO Kalibr SB
• AS35271 JSC "AVIEL"
• AS50449 Limited Liability Company "Kvant"
• AS49893 Bitrace telecom Ltd.
• AS199933 Elektranet Ltd.
• AS213503 ITS-Project LLC

Adjacent networks

• AS12389 PJSC Rostelecom
• AS9002 RETN Limited
• AS48149 Ivanteevskie telecommunicacii Ltd
• AS35598 INETCOM CARRIER LLC
• AS28917 Fiord Networks, UAB
• AS34975 Azimut-R Ltd.
• AS1299 Arelion Sweden AB
• AS201646 Flex-l Ltd
• AS8641 LLC "Nauka-Svyaz"
• AS57489 LLC "Telecom-Uslugi"
• AS41783 Informational technologies and electronic communications LLC
• AS20764 CJSC RASCOM
• AS49893 Bitrace telecom Ltd.
• AS3216 PJSC "Vimpelcom"
• AS43567 UG-TELECOM Ltd.
• AS62255 BiMajLink d.o.o.
• AS216335 OOO Kalibr SB
• AS35271 JSC "AVIEL"
• AS208972 GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI
• AS24482 SG.GS
• AS50449 Limited Liability Company "Kvant"
• AS37721 Virtual Technologies & Solutions
• AS29076 Citytelecom LLC
• AS57304 JSC "RetnNet"
• AS199933 Elektranet Ltd.

Internet exchanges

• MSK-IX Moscow — Moscow, Russia
• GNM Internet Exchange Amsterdam — Amsterdam, Netherlands