65,536 routable15 ASes
/16 subnet
203.237.0.0/16
Where this subnet is, who announces it, and what our databases hold in it. Below, every /24 inside it; open one for its addresses.
65,536
routable addresses
65,536
geolocated
1
country
15
announcing ASes
112
announced prefixes
106
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 Telecom11,520 · 17.58%
- AS9754CHOSUN UNIVERSITY8,192 · 12.50%
- AS9778DAEJIN UNIVERSITY8,192 · 12.50%
- AS10166Korea Water Resources Corporation8,192 · 12.50%
- AS18297K-JIST8,192 · 12.50%
- AS23983Daejeon University6,656 · 10.16%
- AS9318SK Broadband Co Ltd4,608 · 7.03%
- AS18329Sangmyung University2,816 · 4.30%
- AS3786LG DACOM Corporation2,304 · 3.52%
- AS18031Sangmyung University2,048 · 3.13%
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 IP270.04%
- 0.13%
- 0.00%
- 0.00%
- None here
- None here
- None here
- None here
- None here
- Carrier IP32,76850.00%
- None here
- None here
- 0.01%
- 0.00%
- 0.04%
- Web IP3400.52%
- 0.02%
Announced prefixes
Every prefix inside this block that BGP Route saw announced, with its origin and RPKI status.
| PREFIX | ORIGIN | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|---|
| 203.237.0.0/19 | AS10166Korea Water Resources Corporation | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.0.0/24 | AS10166Korea Water Resources Corporation | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.1.0/24 | AS10166Korea Water Resources Corporation | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.2.0/24 | AS10166Korea Water Resources Corporation | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.3.0/24 | AS10166Korea Water Resources Corporation | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.32.0/19 | AS18297K-JIST | South Korea | Not found | 20 | 2026-10-02 |
| 203.237.64.0/19 | AS9778DAEJIN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.96.0/19 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.96.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.97.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.98.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 17 | 2026-10-02 |
| 203.237.99.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 17 | 2026-10-02 |
| 203.237.100.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.101.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.102.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 17 | 2026-10-02 |
| 203.237.103.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.104.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.105.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.106.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.107.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.108.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.109.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.110.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.111.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.112.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.113.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.114.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.115.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.116.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.117.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.118.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.119.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.120.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.121.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.122.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.123.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.124.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.125.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.126.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.127.0/24 | AS9754CHOSUN UNIVERSITY | South Korea | Not found | 17 | 2026-10-02 |
| 203.237.128.0/17 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.128.0/19 | AS3786LG DACOM Corporation | South Korea | Not found | 17 | 2026-10-02 |
| 203.237.128.0/20 | AS23983Daejeon University | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.144.0/21 | AS23983Daejeon University | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.152.0/23 | AS23983Daejeon University | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.154.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.156.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.157.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.158.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.159.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.160.0/24 | AS3786LG DACOM Corporation | South Korea | Not found | 17 | 2026-10-02 |
| 203.237.161.0/24 | AS3786LG DACOM Corporation | South Korea | Not found | 17 | 2026-10-02 |
| 203.237.162.0/24 | AS3786LG DACOM Corporation | South Korea | Not found | 17 | 2026-10-02 |
| 203.237.163.0/24 | AS3786LG DACOM Corporation | South Korea | Not found | 17 | 2026-10-02 |
| 203.237.164.0/24 | AS3786LG DACOM Corporation | South Korea | Not found | 17 | 2026-10-02 |
| 203.237.165.0/24 | AS3786LG DACOM Corporation | South Korea | Not found | 17 | 2026-10-02 |
| 203.237.166.0/24 | AS3786LG DACOM Corporation | South Korea | Not found | 17 | 2026-10-02 |
| 203.237.167.0/24 | AS3786LG DACOM Corporation | South Korea | Not found | 17 | 2026-10-02 |
| 203.237.168.0/24 | AS18031Sangmyung University | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.169.0/24 | AS18031Sangmyung University | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.170.0/24 | AS18031Sangmyung University | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.171.0/24 | AS18031Sangmyung University | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.172.0/23 | AS3786LG DACOM Corporation | South Korea | Not found | 17 | 2026-10-02 |
| 203.237.172.0/24 | AS18031Sangmyung University | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.173.0/24 | AS18031Sangmyung University | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.174.0/24 | AS18031Sangmyung University | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.175.0/24 | AS18031Sangmyung University | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.176.0/21 | AS18329Sangmyung University | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.184.0/22 | AS17614Geumgang University | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.188.0/23 | AS18319YeungNam College of Science Technology | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.190.0/24 | AS9318SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.191.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.192.0/21 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.200.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.201.0/24 | AS18329Sangmyung University | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.202.0/23 | AS18026JEJU NATIONAL UNIVERSITY | South Korea | Not found | 20 | 2026-10-02 |
| 203.237.204.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.205.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.206.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.207.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.208.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.209.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.210.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.211.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.212.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.213.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.214.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.215.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.216.0/24 | AS9318SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.217.0/24 | AS9318SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.218.0/24 | AS9318SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.219.0/24 | AS9318SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.220.0/24 | AS9318SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.221.0/24 | AS9318SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.222.0/24 | AS9318SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.223.0/24 | AS9318SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.224.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.225.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.226.0/24 | AS9318SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 203.237.227.0/24 | AS4766Korea Telecom | South Korea | Not found | 18 | 2026-10-02 |
Every /24 inside it
00 · Evaluate
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01 · License
Then license what you use.
Standard, for detection and decisions inside your own product and operations.
Redistribution, when the data ships onward inside what you sell, priced by scope rather than by seat.
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