81.139.165.0/24

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Summary

IP address summary information
ASN	AS2856 — British Telecommunications Limited
BGP Prefix	81.128.0.0/12
Pingable IPs	10
Routers	8


81.139.165.0	host81-139-165-0.in-addr.btopenworld.com	0
81.139.165.1	host81-139-165-1.in-addr.btopenworld.com	0
81.139.165.2	host81-139-165-2.in-addr.btopenworld.com	0
81.139.165.3	host81-139-165-3.in-addr.btopenworld.com	0
81.139.165.4	host81-139-165-4.in-addr.btopenworld.com	0
81.139.165.5	host81-139-165-5.in-addr.btopenworld.com	0
81.139.165.6	host81-139-165-6.in-addr.btopenworld.com	0
81.139.165.7	host81-139-165-7.in-addr.btopenworld.com	0
81.139.165.8	host81-139-165-8.in-addr.btopenworld.com	0
81.139.165.9	host81-139-165-9.in-addr.btopenworld.com	0
81.139.165.10	host81-139-165-10.in-addr.btopenworld.com	0
81.139.165.11	host81-139-165-11.in-addr.btopenworld.com	0
81.139.165.12	host81-139-165-12.in-addr.btopenworld.com	0
81.139.165.13	host81-139-165-13.in-addr.btopenworld.com	0
81.139.165.14	host81-139-165-14.in-addr.btopenworld.com	0

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

$ traceroute -a -n -q1 -f3 81.139.165.40

traceroute to 81.139.165.40 (81.139.165.40): 64 hops max, 52 byte packets

3 [AS2856] 195.99.126.124 15.764 ms

4 [AS2856] 194.74.16.168 1.675 ms

5 [AS2856] 109.159.255.29 1.45 ms

6 [AS2856] 217.32.25.85 0.925 ms

7 [AS2856] 81.139.165.40 18 ms

Measurement taken from

IPinfo ProbeNet in London, GB

On July 12, 2026

Traceroute

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81.139.165.0/24

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Traceroute

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81.139.165.0/24

Summary

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