81.136.139.0/24

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Summary

IP address summary information
ASN	AS2856 — British Telecommunications Limited
BGP Prefix	81.128.0.0/12
Pingable IPs	78
Routers	0


81.136.139.0	host81-136-139-0.in-addr.btopenworld.com	0
81.136.139.1	host81-136-139-1.in-addr.btopenworld.com	0
81.136.139.2	host81-136-139-2.in-addr.btopenworld.com	0
81.136.139.3	host81-136-139-3.in-addr.btopenworld.com	0
81.136.139.4	host81-136-139-4.in-addr.btopenworld.com	0
81.136.139.5	host81-136-139-5.in-addr.btopenworld.com	0
81.136.139.6	mail.microban.co.uk	0
81.136.139.7	host81-136-139-7.in-addr.btopenworld.com	0
81.136.139.8	host81-136-139-8.in-addr.btopenworld.com	0
81.136.139.9	host81-136-139-9.in-addr.btopenworld.com	0
81.136.139.10	host81-136-139-10.in-addr.btopenworld.com	0
81.136.139.11	host81-136-139-11.in-addr.btopenworld.com	0
81.136.139.12	host81-136-139-12.in-addr.btopenworld.com	0
81.136.139.13	host81-136-139-13.in-addr.btopenworld.com	0
81.136.139.14	host81-136-139-14.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 81.136.139.132

traceroute to 81.136.139.132 (81.136.139.132): 64 hops max, 52 byte packets

3 [AS36236] 185.40.232.33 0.238 ms

4 [] 195.66.224.10 0.611 ms

5 [AS2856] 62.6.201.8 0.983 ms

6 [AS2856] 62.172.103.63 1.349 ms

7 [AS2856] 217.32.240.21 1.168 ms

8 [AS2856] 213.120.163.237 1.008 ms

9 [AS2856] 81.136.139.132 9.265 ms

Measurement taken from

IPinfo ProbeNet in London, GB

On August 7, 2026

Traceroute

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81.136.139.0/24

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81.136.139.0/24

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