AS5400
BT British Telecommunications PLC
AS5400 is an Autonomous System — a group of IP networks managed under a single routing policy — operated by BT British Telecommunications PLC, announcing routes from GB. ScanMalware.com has recorded 4 public scans of 4 distinct URLs hosted on this network, the earliest from 2026-01-12 and the most recent from 2026-06-19.
In current BGP routing data, AS5400 announces 1,690 IPv4 prefixes and 313 IPv6 prefixes, and is reached through 3 observed upstream providers. A network's routing footprint and transit relationships are useful context for judging whether a hosted site sits on established infrastructure or on a network with a pattern of abuse.
Upstream transit providers
These Autonomous Systems are most frequently seen forwarding traffic for AS5400 in BGP routing tables — they form its effective transit and peering profile.
Recent public scans on AS5400
A rolling sample of recent public scans of hosts on this network. Listing a site here is not a safety judgement — open a scan to see its full verdict.
| Site | Scanned |
|---|---|
| WebCenter Logon https://amcor-tst.esko-saas.com | 2026-06-19 |
| WebCenter Logon https://barilla-artwork.esko-saas.com | 2026-03-23 |
| amcor-prerelease-aeps2.esko-saas.com https://amcor-prerelease-aeps2.esko-saas.com | 2026-02-05 |
| https://api1.emea.fedex.com | 2026-01-12 |
Open the full AS5400 search interface — filters, pagination and BGP detail →
Frequently asked questions about AS5400
- Does hosting a site on AS5400 make it unsafe?
- No. AS5400 is a network operated by BT British Telecommunications PLC, and like any Autonomous System it carries a mix of legitimate and malicious sites. Hosting location is context, not a verdict — ScanMalware scores each scanned page on its own content, scripts and behaviour.
- How many sites on AS5400 has ScanMalware scanned?
- ScanMalware has recorded 4 public scans across 4 distinct URLs hosted on AS5400. The figure updates as new URLs on this network are submitted.
- Which networks provide transit for AS5400?
- In the BGP paths ScanMalware observes, AS5400 is most often reached through AS2497 (IIJ Internet Initiative Japan Inc.), AS6939 (HURRICANE) and AS37100 (SEACOM-AS). These upstream providers form the network's effective transit profile.
How ScanMalware builds this profile
ScanMalware.com performs public URL scans with a real headless browser, then maps each scanned host to its current ASN ownership and BGP routing context. This profile is built from those scans plus live routing data — the IP prefixes AS5400 announces, the networks that transit it, and the country it operates from — letting you pivot from one suspicious host to the wider network it sits on.
Browse more profiled networks on the ASN index, or scan a URL to see its hosting network.