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Autonomous System

AS21453

Flex Ltd.

Announced IPs
117,248
CIDR prefixes
19
ASN
AS21453

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

69/100
Moderate
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Traffic level 100-200Gbps
Geographic scope Europe
Traffic ratio Mostly Inbound
Peering policy Open
IRR record AS-FLEX

Present at 8 internet exchanges: GNM-IX, PITER-IX Moscow: MSK_PEERING_VLAN, MSK-IX Moscow: MSK-IX peering network, PITER-IX St. Petersburg: SPB_PEERING_VLAN, PITER-IX Tallinn: TLL_PEERING VLAN, PITER-IX Riga: RIX_PEERING_VLAN, PITER-IX Helsinki, PITER-IX Frankfurt

AS21453 — global IP footprint

Cities where AS21453 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.

View on 3D globe →

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS21453 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
178.167.64.0/19 24,700 2026-07-18 12:15:47
94.253.0.0/18 23,248 2026-07-18 12:15:47
94.253.2.0/24 23,205 2026-07-18 12:15:47
94.253.0.0/17 23,183 2026-07-18 12:15:47
94.253.96.0/19 23,011 2026-07-18 12:15:47
178.167.0.0/17 22,719 2026-07-18 12:15:47
80.84.112.0/20 22,672 2026-07-18 12:15:47
178.167.0.0/18 22,530 2026-07-18 12:15:47
31.31.64.0/21 21,836 2026-07-18 12:24:24
95.183.64.0/18 19,843 2026-07-18 12:15:47
94.253.102.0/23 19,601 2026-07-18 12:15:47
178.57.224.0/19 19,279 2026-07-18 12:15:47
88.84.192.0/19 19,095 2026-07-18 12:24:24
212.7.224.0/19 18,934 2026-07-18 12:15:47
185.5.148.0/22 18,766 2026-07-18 12:24:24
80.252.128.0/19 17,904 2026-07-18 12:24:24
178.167.96.0/19 17,814 2026-07-18 12:15:47

Frequently Asked Questions

What is AS21453?

AS21453 is an Autonomous System Number assigned to Flex Ltd.. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS21453 announce?

AS21453 announces 117.2K IPv4 addresses distributed across 19 routed CIDR prefixes. The network is registered in Russia.

Who operates AS21453?

AS21453 is operated by Flex Ltd.. The organization is based in Russia. You can view all IP ranges and related ASNs on the organization page.

What country is AS21453 registered in?

AS21453 is registered in Russia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-18 12:40:28 UTC
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