81.137.39.0/24

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Summary

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


81.137.39.0	host81-137-39-0.in-addr.btopenworld.com	0
81.137.39.1	host81-137-39-1.in-addr.btopenworld.com	0
81.137.39.2	host81-137-39-2.in-addr.btopenworld.com	0
81.137.39.3	host81-137-39-3.in-addr.btopenworld.com	0
81.137.39.4	host81-137-39-4.in-addr.btopenworld.com	0
81.137.39.5	host81-137-39-5.in-addr.btopenworld.com	0
81.137.39.6	host81-137-39-6.in-addr.btopenworld.com	0
81.137.39.7	host81-137-39-7.in-addr.btopenworld.com	0
81.137.39.8	host81-137-39-8.in-addr.btopenworld.com	0
81.137.39.9	host81-137-39-9.in-addr.btopenworld.com	0
81.137.39.10	host81-137-39-10.in-addr.btopenworld.com	0
81.137.39.11	host81-137-39-11.in-addr.btopenworld.com	0
81.137.39.12	host81-137-39-12.in-addr.btopenworld.com	0
81.137.39.13	host81-137-39-13.in-addr.btopenworld.com	0
81.137.39.14	host81-137-39-14.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 -f4 -m13 81.137.39.225

traceroute to 81.137.39.225 (81.137.39.225): 13 hops max, 52 byte packets

4 [AS49981] 109.236.95.99 1.418 ms

5 [] 80.249.208.108 4.365 ms

6 [AS5400] 166.49.195.175 9.302 ms

7 [AS5400] 166.49.209.133 9.261 ms

8 [AS2856] 62.172.103.57 7.55 ms

9 [AS2856] 217.32.240.23 7.367 ms

10 [AS2856] 213.120.163.233 7.033 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Naaldwijk, NL

On July 12, 2026

Traceroute

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81.137.39.0/24

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81.137.39.0/24

Summary

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