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Autonomous System

AS58305

SYN LTD

Announced IPs
1,024
CIDR prefixes
1
ASN
AS58305

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.

53/100
Caution
How this score is built

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

⚠ 4 MOAS prefixes — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS58305 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

PrefixOrigin ASNsLast detected (UTC)
107.161.163.0/24 AS23470, AS58305 2026-07-22 16:08:23
107.161.172.0/24 AS23470, AS58305 2026-07-22 16:08:23
107.161.173.0/24 AS23470, AS58305 2026-07-22 16:08:23
155.254.63.0/24 AS23470, AS58305 2026-07-22 16:08:23

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Geographic scope Global
Traffic ratio Balanced
Peering policy Selective
IRR record RIPE::AS-SYN

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
107.161.164.0/22 1.0K
9.7%
SYN LTD GB
107.161.172.0/23 512
0.0%
SYN LTD US
107.161.163.0/24 256
0.0%
SYN LTD US
155.254.63.0/24 256
0.0%
SYN LTD US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS58305 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
107.161.166.0/24 8,507 2026-07-22 16:08:12
107.161.165.0/24 8,505 2026-07-22 16:08:12
107.161.167.0/24 8,493 2026-07-22 16:08:12
107.161.164.0/24 8,452 2026-07-22 16:08:12
107.161.172.0/24 5,185 2026-07-22 16:08:12
155.254.63.0/24 5,177 2026-07-22 16:08:12
107.161.173.0/24 5,161 2026-07-22 16:08:12
107.161.163.0/24 5,152 2026-07-22 16:08:12

Frequently Asked Questions

What is AS58305?

AS58305 is an Autonomous System Number assigned to SYN 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 AS58305 announce?

AS58305 announces 1.0K IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in United States.

Who operates AS58305?

AS58305 is operated by SYN LTD. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS58305 registered in?

AS58305 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-22 16:10:36 UTC
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