asn.dev

Autonomous system

AS64080 SYN-UK SYN

Unclassified ARIN Cable/DSL/ISP

IPv4 addresses 15.87K 31 prefixes
IPv6 prefixes 3 counted as prefixes, not addresses
Countries 1 mostly GB
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

SYN

United Kingdom · AI-generated

hosting infrastructure business

SYN-UK SYN is operated by SYN LTD.

What it's used for

  • The address space carries hosting and infrastructure services, evidenced by netnames such as SYN-GB-200 and UK-SYN-20141006 registered to SYN LTD.
  • The AS announces 16,128 IPv4 addresses across 32 prefixes and 3 IPv6 prefixes, with only 2 observed neighbours, indicating a role focused on hosting and business infrastructure rather than transit.
  • Traffic from this AS consists of web and API endpoints for businesses using SYN's global hosting and network services.

Notable

  • All registrants in the sample agree with the announcer, consistently listing SYN LTD as the holder.
  • The address inventory is finely subdivided into multiple /22, /23, and /24 blocks, reflecting an internal corporate estate structure for site-by-site segmentation.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS42831UK Dedicated Servers Limited1,289
AS35200TransitX Ltd1,140

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 31 prefixes · 15.87K addresses IPv6 3 prefixes

CountryNamePrefixes
GBUnited Kingdom34

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS64080
Registry name
SYN-UK
Registrant
MNT-SYN
Abuse contact
abuse@syn.one
Registered
2021-06-07
Last changed
2025-04-14
Allocation
allocated

Declared

PeeringDB profile

self-reported
Name
SYN AS64080
Network type
Cable/DSL/ISP
Scope
Global
Traffic ratio
Balanced
Peering policy
Selective
IRR as-set
RIPE::AS-SYN
Website
https://syn.one

PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 43 valid, 0 with no ROA
ROAs
42 authorising AS64080
ASPA
no ASPA record
IRR
100% registered · 43 of 43 announcements
Route objects
43 naming AS64080

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: 442 networks and 1,772 prefixes, as published 2026-10-15. 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

Cross-check