121.139.0.0/16

Where this subnet is, who announces it, and what our databases hold in it. Below, every /24 inside it; open one for its addresses.

121.138.0.0/16 121.140.0.0/16

65,536

routable addresses

65,536

geolocated

country

announcing ASes

announced prefixes

973

anonymous addresses

Where it is

Addresses IP Geolocation places in each country, as a share of those it places.

South Korea65,536 · 100.00%

Who announces it

Each /24 counted for the AS announcing most of it, as a share of the routable addresses.

AS4766Korea Telecom65,280 · 99.61%
AS23591LS ITC256 · 0.39%

What the databases see

Addresses each address-keyed database holds in this block, as a share of its routable addresses. Counts overlap: one address can be in several.

VPN IP624
0.95%
Residential Proxy IP375
0.57%
Datacenter Proxy IP34
0.05%
Mobile Proxy IP5
0.01%
Public Proxy IP3
0.00%
Tor IP0
None here
Relay IP0
None here
Hosting IP0
None here
CDN IP0
None here
Carrier IP26,880
41.02%
Satellite IP0
None here
Anycast IP0
None here
SSH IP301
0.46%
SMTP IP11
0.02%
DNS Resolver IP123
0.19%
Web IP1,235
1.88%
BitTorrent IP1,312
2.00%

Announced prefixes

Every prefix inside this block that BGP Route saw announced, with its origin and RPKI status.

2 prefixes

PREFIX	ORIGIN	COUNTRY	RPKI	PEERS	FIRST SEEN
121.139.137.0/24also AS23591	AS3786LG DACOM Corporation	South Korea	Not found	3	2026-10-02
121.139.137.0/24also AS3786	AS23591LS ITC	South Korea	Not found	15	2026-10-02

Every /24 inside it


121.139.0.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.1.0/24	South Korea	AS4766Korea Telecom	7	2.73%
121.139.2.0/24	South Korea	AS4766Korea Telecom	6	2.34%
121.139.3.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.4.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.5.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.6.0/24	South Korea	AS4766Korea Telecom	7	2.73%
121.139.7.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.8.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.9.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.10.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.11.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.12.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.13.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.14.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.15.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.16.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.17.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.18.0/24	South Korea	AS4766Korea Telecom	11	4.30%
121.139.19.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.20.0/24	South Korea	AS4766Korea Telecom	7	2.73%
121.139.21.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.22.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.23.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.24.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.25.0/24	South Korea	AS4766Korea Telecom	22	8.59%
121.139.26.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.27.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.28.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.29.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.30.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.31.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.32.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.33.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.34.0/24	South Korea	AS4766Korea Telecom	6	2.34%
121.139.35.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.36.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.37.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.38.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.39.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.40.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.41.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.42.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.43.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.44.0/24	South Korea	AS4766Korea Telecom	6	2.34%
121.139.45.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.46.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.47.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.48.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.49.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.50.0/24	South Korea	AS4766Korea Telecom	19	7.42%
121.139.51.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.52.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.53.0/24	South Korea	AS4766Korea Telecom	9	3.52%
121.139.54.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.55.0/24	South Korea	AS4766Korea Telecom	14	5.47%
121.139.56.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.57.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.58.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.59.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.60.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.61.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.62.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.63.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.64.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.65.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.66.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.67.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.68.0/24	South Korea	AS4766Korea Telecom	6	2.34%
121.139.69.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.70.0/24	South Korea	AS4766Korea Telecom	17	6.64%
121.139.71.0/24	South Korea	AS4766Korea Telecom	6	2.34%
121.139.72.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.73.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.74.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.75.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.76.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.77.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.78.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.79.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.80.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.81.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.82.0/24	South Korea	AS4766Korea Telecom	12	4.69%
121.139.83.0/24	South Korea	AS4766Korea Telecom	10	3.91%
121.139.84.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.85.0/24	South Korea	AS4766Korea Telecom	15	5.86%
121.139.86.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.87.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.88.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.89.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.90.0/24	South Korea	AS4766Korea Telecom	14	5.47%
121.139.91.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.92.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.93.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.94.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.95.0/24	South Korea	AS4766Korea Telecom	6	2.34%
121.139.96.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.97.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.98.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.99.0/24	South Korea	AS4766Korea Telecom	8	3.13%
121.139.100.0/24	South Korea	AS4766Korea Telecom	8	3.13%
121.139.101.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.102.0/24	South Korea	AS4766Korea Telecom	7	2.73%
121.139.103.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.104.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.105.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.106.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.107.0/24	South Korea	AS4766Korea Telecom	16	6.25%
121.139.108.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.109.0/24	South Korea	AS4766Korea Telecom	9	3.52%
121.139.110.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.111.0/24	South Korea	AS4766Korea Telecom	10	3.91%
121.139.112.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.113.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.114.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.115.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.116.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.117.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.118.0/24	South Korea	AS4766Korea Telecom	15	5.86%
121.139.119.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.120.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.121.0/24	South Korea	AS4766Korea Telecom	6	2.34%
121.139.122.0/24	South Korea	AS4766Korea Telecom	12	4.69%
121.139.123.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.124.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.125.0/24	South Korea	AS4766Korea Telecom	6	2.34%
121.139.126.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.127.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.128.0/24	South Korea	AS4766Korea Telecom	8	3.13%
121.139.129.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.130.0/24	South Korea	AS4766Korea Telecom	7	2.73%
121.139.131.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.132.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.133.0/24	South Korea	AS4766Korea Telecom	13	5.08%
121.139.134.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.135.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.136.0/24	South Korea	AS4766Korea Telecom	7	2.73%
121.139.137.0/24	South Korea	AS23591LS ITC	1	0.39%
121.139.138.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.139.0/24	South Korea	AS4766Korea Telecom	20	7.81%
121.139.140.0/24	South Korea	AS4766Korea Telecom	6	2.34%
121.139.141.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.142.0/24	South Korea	AS4766Korea Telecom	12	4.69%
121.139.143.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.144.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.145.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.146.0/24	South Korea	AS4766Korea Telecom	10	3.91%
121.139.147.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.148.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.149.0/24	South Korea	AS4766Korea Telecom	9	3.52%
121.139.150.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.151.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.152.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.153.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.154.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.155.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.156.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.157.0/24	South Korea	AS4766Korea Telecom	9	3.52%
121.139.158.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.159.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.160.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.161.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.162.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.163.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.164.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.165.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.166.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.167.0/24	South Korea	AS4766Korea Telecom	10	3.91%
121.139.168.0/24	South Korea	AS4766Korea Telecom	13	5.08%
121.139.169.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.170.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.171.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.172.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.173.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.174.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.175.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.176.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.177.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.178.0/24	South Korea	AS4766Korea Telecom	7	2.73%
121.139.179.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.180.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.181.0/24	South Korea	AS4766Korea Telecom	10	3.91%
121.139.182.0/24	South Korea	AS4766Korea Telecom	8	3.13%
121.139.183.0/24	South Korea	AS4766Korea Telecom	12	4.69%
121.139.184.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.185.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.186.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.187.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.188.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.189.0/24	South Korea	AS4766Korea Telecom	6	2.34%
121.139.190.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.191.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.192.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.193.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.194.0/24	South Korea	AS4766Korea Telecom	8	3.13%
121.139.195.0/24	South Korea	AS4766Korea Telecom	10	3.91%
121.139.196.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.197.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.198.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.199.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.200.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.201.0/24	South Korea	AS4766Korea Telecom	8	3.13%
121.139.202.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.203.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.204.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.205.0/24	South Korea	AS4766Korea Telecom	15	5.86%
121.139.206.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.207.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.208.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.209.0/24	South Korea	AS4766Korea Telecom	6	2.34%
121.139.210.0/24	South Korea	AS4766Korea Telecom	6	2.34%
121.139.211.0/24	South Korea	AS4766Korea Telecom	7	2.73%
121.139.212.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.213.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.214.0/24	South Korea	AS4766Korea Telecom	9	3.52%
121.139.215.0/24	South Korea	AS4766Korea Telecom	12	4.69%
121.139.216.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.217.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.218.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.219.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.220.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.221.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.222.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.223.0/24	South Korea	AS4766Korea Telecom	12	4.69%
121.139.224.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.225.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.226.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.227.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.228.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.229.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.230.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.231.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.232.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.233.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.234.0/24	South Korea	AS4766Korea Telecom	4	1.56%
121.139.235.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.236.0/24	South Korea	AS4766Korea Telecom	7	2.73%
121.139.237.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.238.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.239.0/24	South Korea	AS4766Korea Telecom	9	3.52%
121.139.240.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.241.0/24	South Korea	AS4766Korea Telecom	7	2.73%
121.139.242.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.243.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.244.0/24	South Korea	AS4766Korea Telecom	6	2.34%
121.139.245.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.246.0/24	South Korea	AS4766Korea Telecom	5	1.95%
121.139.247.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.248.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.249.0/24	South Korea	AS4766Korea Telecom	0	0.00%
121.139.250.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.251.0/24	South Korea	AS4766Korea Telecom	3	1.17%
121.139.252.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.253.0/24	South Korea	AS4766Korea Telecom	2	0.78%
121.139.254.0/24	South Korea	AS4766Korea Telecom	1	0.39%
121.139.255.0/24	South Korea	AS4766Korea Telecom	5	1.95%

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