81.137.148.0/24

Access unlimited lookups, API and downloads, data enrichment, and Probenet Live.

Summary

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


81.137.148.0	host81-137-148-0.in-addr.btopenworld.com	0
81.137.148.1	host81-137-148-1.in-addr.btopenworld.com	0
81.137.148.2	host81-137-148-2.in-addr.btopenworld.com	0
81.137.148.3	host81-137-148-3.in-addr.btopenworld.com	0
81.137.148.4	host81-137-148-4.in-addr.btopenworld.com	0
81.137.148.5	host81-137-148-5.in-addr.btopenworld.com	0
81.137.148.6	host81-137-148-6.in-addr.btopenworld.com	0
81.137.148.7	host81-137-148-7.in-addr.btopenworld.com	0
81.137.148.8	host81-137-148-8.in-addr.btopenworld.com	0
81.137.148.9	host81-137-148-9.in-addr.btopenworld.com	0
81.137.148.10	host81-137-148-10.in-addr.btopenworld.com	0
81.137.148.11	host81-137-148-11.in-addr.btopenworld.com	0
81.137.148.12	host81-137-148-12.in-addr.btopenworld.com	0
81.137.148.13	host81-137-148-13.in-addr.btopenworld.com	0
81.137.148.14	host81-137-148-14.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 -f2 -m18 81.137.148.227

traceroute to 81.137.148.227 (81.137.148.227): 18 hops max, 52 byte packets

2 [AS31863] 199.255.157.205 5.937 ms

3 [AS31863] 199.255.159.22 0.356 ms

4 [AS31863] 199.255.159.9 0.27 ms

5 [AS31863] 199.255.156.54 8.014 ms

6 [AS174] 38.122.46.73 8.572 ms

7 [AS174] 154.54.41.37 8.776 ms

8 [AS174] 154.54.92.34 9.983 ms

9 [AS174] 154.54.2.169 8.425 ms

10 [AS174] 154.54.169.177 24.447 ms

11 [AS174] 154.54.5.218 26.123 ms

12 [AS174] 154.54.11.154 25.649 ms

13 [AS5400] 166.49.195.87 98.133 ms

14 [AS5400] 166.49.209.133 98.442 ms

15 [AS2856] 195.99.127.37 97.91 ms

16 *

17 *

18 *

Measurement taken from

IPinfo ProbeNet in Lenoir, US

On July 12, 2026

Traceroute

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

81.137.148.0/24

Summary

Traceroute

Traceroute

An API built with users in mind: reliable, accurate, and easy-to-use

Our IP tools

What is my IP?

Map IPs

Summarize IPs

Traceroute

81.137.148.0/24

Summary

IP Addresses

IP Addresses

Traceroute

Traceroute

An API built with users in mind: reliable, accurate, and easy-to-use

Our IP tools

What is my IP?

Map IPs

Summarize IPs

IP Addresses

Traceroute