asn.dev

Autonomous system

AS209870 CYLO

Hosting RIPE

IPv4 addresses 512 2 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly GB
Exchanges 7 recorded by PCH
Upstreams 24 0 downstream
Flagged prefixes 0 none

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

Recorded at 7 exchanges in 2 countries, largest first.

ExchangeLocationTheir address
AMS-IX AmsterdamAmsterdam, Netherlands80.249.211.85
Neutral Internet ExchangeAmsterdam, Netherlands193.239.117.222
KleyReX Internet ExchangeFrankfurt, Germany193.189.83.180
The Frys Internet ExchangeFrysian, Netherlands2001:7f8:10f::3:33ce:234
Speed Internet ExchangeDronten, Netherlands185.1.222.42
InterIX Internet ExchangeAmsterdam, Netherlands2001:7f8:134::e5
LayerSwitch Internet ExchangeThe Hague, Netherlands185.1.32.149

Transit providers

24 upstream, 0 downstream and 29 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS43861Circle B B.V.46
AS6939Hurricane Electric LLC32
AS174Cogent Communications, LLC24
AS24482SG.GS3
AS37721Virtual Technologies & Solutions3
AS58057Securebit AG3
AS208972GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI3
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)2

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, 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 2 prefixes · 512 addresses IPv6 1 prefixes

CountryNamePrefixes
GBUnited Kingdom3

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS209870
Registry name
Cylo
Registrant
lir-uk-cyloltd-1-MNT
Abuse contact
abusebox@cylo.net
Registered
2025-04-24
Last changed
2026-08-28
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 3 valid, 0 with no ROA
ROAs
4 authorising AS209870
ASPA
2 declared providers
IRR
67% registered · 2 of 3 announcements
Route objects
2 naming AS209870

Reputation

Classification and threat

Hosting Datacenter or cloud provider. Addresses are servers, not people.

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: 431 networks and 1,768 prefixes, as published 2026-10-12. 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