121.187.0.0/16

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Summary

IP address summary information
ASNs	3
Countries	1
BGP Prefixes	5
Routers	89
Pingable IPs	36,516

South Korea
100.00%


121.187.0.0/24	South Korea100.00%	1	1	1
121.187.1.0/24	South Korea100.00%	1	1	0
121.187.2.0/24	South Korea100.00%	1	1	0
121.187.3.0/24	South Korea100.00%	1	1	0
121.187.4.0/24	South Korea100.00%	1	1	0
121.187.5.0/24	South Korea100.00%	1	1	0
121.187.6.0/24	South Korea100.00%	1	1	0
121.187.7.0/24	South Korea100.00%	1	1	0
121.187.8.0/24	South Korea100.00%	1	1	1
121.187.9.0/24	South Korea100.00%	1	1	1

Sub-ranges

Important routers in 121.187.0.0/16


121.187.89.230	Seoul, South Korea	AS4766Korea Telecom
121.187.89.42	Seoul, South Korea	AS4766Korea Telecom
121.187.89.2	Seoul, South Korea	AS4766Korea Telecom
121.187.89.178	Seoul, South Korea	AS4766Korea Telecom
121.187.159.30	Seoul, South Korea	AS4766Korea Telecom
121.187.89.74	Seoul, South Korea	AS4766Korea Telecom
121.187.159.2	Seoul, South Korea	AS4766Korea Telecom
121.187.89.30	Seoul, South Korea	AS4766Korea Telecom
121.187.89.26	Seoul, South Korea	AS4766Korea Telecom
121.187.89.206	Seoul, South Korea	AS4766Korea Telecom

Important routers in 121.187.0.0/16

Pingable IPs

36,516 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.


121.187.13.190	AS4766Korea Telecom	2.65ms from Seoul, KR
121.187.29.228	AS4766Korea Telecom	2.39ms from Seoul, KR
121.187.105.239	AS4766Korea Telecom	4.11ms from Seoul, KR
121.187.11.65	AS4766Korea Telecom	3.27ms from Seoul, KR
121.187.57.177	AS4766Korea Telecom	3.17ms from Seoul, KR
121.187.18.205	AS4766Korea Telecom	2.73ms from Seoul, KR
121.187.89.37	AS4766Korea Telecom	3.87ms from Seoul, KR
121.187.10.184	AS4766Korea Telecom	3.04ms from Seoul, KR
121.187.110.129	AS4766Korea Telecom	3.94ms from Seoul, KR
121.187.56.245	AS4766Korea Telecom	2.98ms from Seoul, KR

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.


90.174.178.112	AS12479Orange Espagne SA	1.73ms from Barcelona, ES
68.219.20.192	AS8075Microsoft Corporation	0.24ms from Dublin, IE
182.178.76.208	AS17557Pakistan Telecommunication Company Limited	5.33ms from Karachi, PK
119.158.136.176	AS17557Pakistan Telecommunication Company Limited	15.25ms from Karachi, PK
82.2.21.224	AS5089Virgin Media Limited	4.63ms from London, GB
2.120.232.240	AS5607Sky UK Limited	3.91ms from London, GB
107.148.144.80	AS398823PEG TECH INC	0.31ms from Los Angeles, US
47.141.33.208	AS5650Verizon Business	2.30ms from Los Angeles, US
80.78.192.144	AS21143Tula State University	3.62ms from Moscow, RU
218.81.222.48	AS4812China Telecom (Group)	7.80ms from Shanghai, CN

Pingable IPs

Traceroute

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

$ traceroute -a -n -q1 -f2 121.187.56.193

traceroute to 121.187.56.193 (121.187.56.193): 64 hops max, 52 byte packets

2 [AS3257] 209.120.140.49 0.318 ms

3 [AS3257] 89.149.130.54 51.755 ms

4 [AS4766] 121.189.2.25 61.971 ms

5 [AS4766] 112.174.87.201 67.146 ms

6 [AS4766] 112.174.88.157 167.512 ms

7 [AS4766] 112.174.86.197 167.391 ms

8 *

9 *

10 [AS4766] 121.187.56.193 180.768 ms

Measurement taken from

IPinfo ProbeNet in Toronto, CA

On September 3, 2026

Traceroute

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121.187.0.0/16

Summary

Sub-ranges

Important routers in 121.187.0.0/16

Important routers in 121.187.0.0/16

Pingable IPs

Other Pingable IPs

Pingable IPs

Traceroute

Traceroute

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Important routers in 121.187.0.0/16

Pingable IPs

Other Pingable IPs

Traceroute

121.187.0.0/16

Summary

Statistics

Statistics

Sub-ranges

Sub-ranges

Important routers in 121.187.0.0/16

Important routers in 121.187.0.0/16

Pingable IPs

Other Pingable IPs

Pingable IPs

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

Statistics

Sub-ranges

Important routers in 121.187.0.0/16

Pingable IPs

Other Pingable IPs

Traceroute