OSN

Network

British Telecommunications Limited

AS5400registered in United Kingdom (GB)hosts in 18 countries

As of 2026-11-01, British Telecommunications Limited (AS5400, registered in United Kingdom) had 12 912 hosts seen in 18 countries; 26 of them with known CVEs (330 distinct, 4 known to be exploited). It announces 85 IPv4 prefixes and 40 IPv6 prefixes (714 240 IPv4 addresses, 469th by address space).

Known CVEs in this network

12 912hosts seen
26hosts with known CVEs
330distinct CVEs
4known exploited

CVEs by severity: CRITICAL 35 HIGH 129 MEDIUM 146 LOW 20

A match is an indication, not proof: it is based on the software version a service reported, and fixes are often backported without changing the version.

Not counted: 6 hosts with CVEs only on distribution builds whose fix may be backported.

Counted 2026-11-01 04:20 UTC

Organisation
British Telecommunications PLC
Network type
Network service provider (transit) · peering policy Restrictive
Website
http://www.bt.net
Registry
RIPE NCC · United Kingdom GB · allocated 1995-08-15
Announced prefixes
85 IPv4 · 40 IPv6 See them
IPv4 address space
714 240 addresses · 469th of 87 771 networks by size
Rank by exposure
5 442nd by hosts with known CVEs Ranking
Exchange points
61

Routing

Most common CVEs in this network

CVEHosts
CVE-2026-60002 CRITICAL 9.4 20
CVE-2026-106583 HIGH 7.8 20
CVE-2026-106553 HIGH 7.5 20
CVE-2026-106555 HIGH 7.5 20
CVE-2026-59999 HIGH 7.5 20
CVE-2026-60000 HIGH 7.5 20
CVE-2026-106552 MEDIUM 6.5 20
CVE-2026-106585 MEDIUM 6.5 20
CVE-2026-59998 MEDIUM 6.5 20
CVE-2026-60001 MEDIUM 6.5 20
CVE-2026-59995 MEDIUM 5.4 20
CVE-2026-59996 MEDIUM 5.4 20
CVE-2026-59997 MEDIUM 5.4 20
CVE-2026-73282 MEDIUM 4.8 20
CVE-2026-106586 MEDIUM 4.3 20
CVE-2026-106582 LOW 3.7 20
CVE-2026-73281 LOW 3.5 20
CVE-2026-106584 LOW 3.3 20
CVE-2026-106587 LOW 3.3 20
CVE-2026-73283 LOW 2.5 20
CVE-2026-35385 HIGH 8.1 12
CVE-2026-35414 HIGH 8.1 12
CVE-2026-35387 MEDIUM 6.5 12
CVE-2025-61984 LOW 3.6 12
CVE-2025-61985 LOW 3.6 12
CVE-2026-35388 LOW 2.5 12
CVE-2026-106588 LOW 3.1 9
CVE-2026-106589 LOW 2.9 9
CVE-2023-48795 MEDIUM 5.9 8
CVE-2023-38408 CRITICAL 9.8 7
CVE-2021-41617 HIGH 7.0 7
CVE-2023-51385 MEDIUM 6.5 7
CVE-2016-20012 MEDIUM 5.3 7
CVE-2025-32728 LOW 3.8 7
CVE-2021-36368 LOW 3.7 7
CVE-2020-15778 HIGH 7.4 6
CVE-2020-14145 MEDIUM 5.9 6
CVE-2016-1908 CRITICAL 9.8 4
CVE-2015-5600 HIGH 8.1 4
CVE-2016-0778 HIGH 8.1 4
CVE-2015-8325 HIGH 7.8 4
CVE-2016-10012 HIGH 7.8 4
CVE-2016-10708 HIGH 7.5 4
CVE-2016-6515 HIGH 7.5 4
CVE-2016-10009 HIGH 7.3 4
CVE-2015-6564 HIGH 7.0 4
CVE-2016-10010 HIGH 7.0 4
CVE-2019-6109 MEDIUM 6.8 4
CVE-2019-6110 MEDIUM 6.8 4
CVE-2025-26465 MEDIUM 6.8 4

The 50 found on the most hosts, of 330 CVEs.

Most exposed hosts

IPExploitedCVEs
62.172.159.242 3 109 CVEs
212.162.231.210 1 128 CVEs
62.172.34.20 1 96 CVEs
80.255.162.7 1 49 CVEs
62.172.162.212 0 63 CVEs
62.172.75.230 0 61 CVEs
62.172.75.232 0 61 CVEs
62.172.75.233 0 61 CVEs
62.172.65.126 0 40 CVEs
62.172.203.95 0 38 CVEs
212.41.142.78 0 32 CVEs
62.172.152.74 0 30 CVEs
62.172.65.120 0 27 CVEs
62.172.65.121 0 27 CVEs
62.172.65.122 0 27 CVEs
212.108.12.37 0 20 CVEs
212.108.12.45 0 20 CVEs
212.108.12.51 0 20 CVEs
212.108.12.52 0 20 CVEs
212.108.2.186 0 20 CVEs
213.194.34.93 0 20 CVEs
62.134.191.165 0 20 CVEs
62.172.92.143 0 20 CVEs
62.172.75.20 0 16 CVEs
62.172.65.238 0 1 CVE
62.172.98.89 0 1 CVE

Known exploited first, then by the number of CVEs.

Where its hosts are

CountryHostsWith CVEs
United Kingdom GB 5 753 18
Netherlands NL 576 6
Germany DE 581 1
Luxembourg LU 17 1
Belgium BE 2 514 0
Switzerland CH 1 040 0
Denmark DK 1 033 0
Spain ES 548 0
Sweden SE 530 0
France FR 160 0
Ireland IE 51 0
Poland PL 45 0
Italy IT 34 0
Hungary HU 13 0
Finland FI 8 0
Czechia CZ 7 0
Austria AT 1 0
Norway NO 1 0
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