asn.dev

Autonomous system

AS35399 ITIO-AS

Hosting RIPE

IPv4 addresses 2.05K 1 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly GB
Exchanges 1 recorded by PCH
Upstreams 21 0 downstream
Flagged prefixes 0 none

Summary

Online50 Limited

United Kingdom · AI-generated

business voip uk small

The AS handle ITIO-AS is held by Online50 Limited.

What it's used for

  • The address space carries business VoIP services, evidenced by the reverse DNS record sbc01.ambitionpbx.net pointing to a Session Border Controller.
  • The AS announces 2048 IPv4 addresses and 1 IPv6 prefix, with 77 observed neighbours. This ratio of a small address inventory against a high neighbour count indicates a transit or peering-heavy role rather than a large access network.

Notable

  • The RDAP registrant for the announced prefix 87.236.56.0/21 is Online50 Limited, matching the AS holder.
  • Secondary sources identify the operator as also known as IT Inside Out or Network Wizardry, operating in Europe.
  • The inventory consists of a single IPv4 prefix (87.236.56.0/21) and one IPv6 prefix (2a03:b300::/32), representing a compact corporate estate.

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 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
LINX LON1London, United Kingdom195.66.224.248

Transit providers

21 upstream, 0 downstream and 22 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6939Hurricane Electric LLC109
AS174Cogent Communications, LLC98
AS34549meerfarbig GmbH & Co. KG44
AS39326Syntura Group Limited36
AS50304Blix Solutions AS22
AS33891Core-Backbone GmbH16
AS3741Dimension Data11
AS4657StarHub Ltd11

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 1 prefixes · 2.05K addresses IPv6 1 prefixes

CountryNamePrefixes
GBUnited Kingdom2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS35399
Registry name
ITIO-AS
Registrant
ITIO-MNT-TOP
Abuse contact
noc@networkwizardry.com
Registered
2005-07-29
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 12 valid, 0 with no ROA
ROAs
12 authorising AS35399
ASPA
no ASPA record
IRR
100% registered · 12 of 12 announcements
Route objects
12 naming AS35399

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: 442 networks and 1,773 prefixes, as published 2026-10-13. 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