121.155.0.0/16

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Summary

IP address summary information
ASNs	1
Countries	1
BGP Prefixes	1
Routers	67
Pingable IPs	37,465

South Korea
100.00%


121.155.0.0/24	South Korea100.00%	1	1	17
121.155.1.0/24	South Korea100.00%	1	1	0
121.155.2.0/24	South Korea100.00%	1	1	0
121.155.3.0/24	South Korea100.00%	1	1	0
121.155.4.0/24	South Korea100.00%	1	1	0
121.155.5.0/24	South Korea100.00%	1	1	0
121.155.6.0/24	South Korea100.00%	1	1	0
121.155.7.0/24	South Korea100.00%	1	1	0
121.155.8.0/24	South Korea100.00%	1	1	0
121.155.9.0/24	South Korea100.00%	1	1	0

Sub-ranges

Important routers in 121.155.0.0/16


121.155.0.98	Seoul, South Korea	AS4766Korea Telecom
121.155.0.138	Seoul, South Korea	AS4766Korea Telecom
121.155.0.186	Seoul, South Korea	AS4766Korea Telecom
121.155.20.4	Seoul, South Korea	AS4766Korea Telecom
121.155.197.2	Seoul, South Korea	AS4766Korea Telecom
121.155.0.114	Seoul, South Korea	AS4766Korea Telecom
121.155.0.102	Seoul, South Korea	AS4766Korea Telecom
121.155.0.110	Seoul, South Korea	AS4766Korea Telecom
121.155.0.74	Seoul, South Korea	AS4766Korea Telecom
121.155.199.1	Cheongju-si, South Korea	AS4766Korea Telecom

Important routers in 121.155.0.0/16

Pingable IPs

37,465 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.


121.155.145.5	AS4766Korea Telecom	2.81ms from Seoul, KR
121.155.123.1	AS4766Korea Telecom	2.27ms from Seoul, KR
121.155.40.214	AS4766Korea Telecom	4.11ms from Seoul, KR
121.155.26.62	AS4766Korea Telecom	2.85ms from Seoul, KR
121.155.133.120	AS4766Korea Telecom	3.27ms from Seoul, KR
121.155.60.55	AS4766Korea Telecom	2.23ms from Seoul, KR
121.155.122.132	AS4766Korea Telecom	2.29ms from Seoul, KR
121.155.136.180	AS4766Korea Telecom	3.28ms from Seoul, KR
121.155.50.81	AS4766Korea Telecom	2.29ms from Seoul, KR
121.155.18.1	AS4766Korea Telecom	2.92ms 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.


206.0.96.160	AS263699Cablevideo Digital S.A	11.93ms from Buenos Aires, AR
78.82.212.160	AS8434Telenor Sverige AB	1.36ms from Copenhagen, DK
66.69.89.208	AS11427Charter Communications Inc	12.10ms from Dallas, US
142.196.201.48	AS33363Charter Communications, Inc	9.07ms from Orlando, US
222.135.7.128	AS4837CHINA UNICOM China169 Backbone	10.08ms from Qingdao, CN
187.146.248.96	AS8151UNINET	8.27ms from Santiago de Queretaro, MX
156.255.54.32	AS17497Liasail Global Hongkong Limited	0.22ms from Singapore, SG
42.177.149.144	AS4837CHINA UNICOM China169 Backbone	7.98ms from Tieling, CN
34.222.144.32	AS16509Amazon.com, Inc.	0.15ms from Boardman, US
104.237.229.112	AS16628DedFiberCo	0.18ms from Buffalo, US

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 -f7 121.155.248.223

traceroute to 121.155.248.223 (121.155.248.223): 64 hops max, 52 byte packets

7 [AS4766] 112.174.87.37 131.437 ms

8 [AS4766] 112.174.86.197 130.552 ms

9 [AS4766] 112.174.47.218 135.685 ms

10 [AS4766] 112.188.194.190 147.081 ms

11 [AS4766] 112.188.210.50 136.872 ms

12 [AS4766] 121.155.248.223 137.829 ms

Measurement taken from

IPinfo ProbeNet in Los Angeles, US

On June 19, 2026

Traceroute

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121.155.0.0/16

Summary

Sub-ranges

Important routers in 121.155.0.0/16

Important routers in 121.155.0.0/16

Pingable IPs

Other Pingable IPs

Pingable IPs

Traceroute

Traceroute

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Important routers in 121.155.0.0/16

Pingable IPs

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Traceroute

121.155.0.0/16

Summary

Statistics

Statistics

Sub-ranges

Sub-ranges

Important routers in 121.155.0.0/16

Important routers in 121.155.0.0/16

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 121.155.0.0/16

Pingable IPs

Other Pingable IPs

Traceroute