asn.dev

Autonomous system

AS209870 Cylo Cylo Ltd

Hosting RIPE Content

IPv4 addresses 512 2 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly GB
Exchanges 7 recorded by PCH
Upstreams 23 0 downstream
Flagged prefixes 0 none

Summary

Cylo

United Kingdom · AI-generated

business content uk

The AS handle CYLO is held by Cylo Ltd.

What it's used for

  • The address space carries corporate infrastructure, evidenced by netnames UK-CYLOLTD-20080411 and UK-CYLOLTD-20260630 registered to NOC; Cylo Ltd; Abuse-C Role.
  • The network announces 512 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, while maintaining 115 observed neighbours; this ratio of small address inventory to high peering count indicates a transit or interconnection role rather than a large access network.
  • Traffic from this AS consists of web and API endpoints for a media technology company that helps clients create customer engagement and retention solutions.

Notable

  • Registrants for both announced prefixes agree with the announcer, listing NOC; Cylo Ltd; Abuse-C Role for both 79.140.195.0/24 and 85.8.234.0/24.
  • The address inventory is small and finely subdivided into two /24 blocks, consistent with an internal corporate estate rather than a broad consumer base.

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

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

23 upstream, 0 downstream and 28 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS43861Circle B B.V.67
AS6939Hurricane Electric LLC28
AS174Cogent Communications, LLC8
AS24482SG.GS3
AS37721Virtual Technologies & Solutions3
AS58057Securebit AG3
AS208972GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI3
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)2

All 23 upstreams →

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-01, 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

Declared

PeeringDB profile

self-reported
Name
Cylo
Also known as
Appbox
Network type
Content
Scope
Global
Traffic ratio
Heavy Outbound
Peering policy
Open
Present at
7 exchanges
Facilities
2 facilities
Website
https://www.appbox.co

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 · 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: 447 networks and 1,843 prefixes, as published 2026-11-02. 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