203.237.128.0/20
AS23983 · Daejeon University
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| Country |
South Korea
|
| Domain | kren.kr |
| ASN | AS23983 |
| Parent Range | 203.237.128.0/17 |
| Registry | APNIC |
| ID | KREN |
WHOIS Details
inetnum: 203.237.128.0 - 203.237.255.255 netname: KREN descr: Korean Education Network admin-c: IM70-AP tech-c: IM70-AP country: KR status: ALLOCATED PORTABLE mnt-by: MNT-KRNIC-AP mnt-irt: IRT-KRNIC-KR last-modified: 2017-02-02T04:55:27Z source: APNIC irt: IRT-KRNIC-KR address: 9, Jinheung-gil, Naju-si, Jeollanam-do e-mail: irt@nic.or.kr abuse-mailbox: irt@nic.or.kr admin-c: IM574-AP tech-c: IM574-AP auth: # Filtered remarks: irt@nic.or.kr was validated on 2020-04-09 mnt-by: MNT-KRNIC-AP last-modified: 2025-09-04T01:00:01Z source: APNIC person: IP Manager address: 57 Daehak-ro, Jongno-gu, Seoul country: KR phone: +82-2-882-5363 e-mail: kindman@kren.kr nic-hdl: IM70-AP mnt-by: MNT-KRNIC-AP last-modified: 2025-11-17T00:10:02Z source: APNIC inetnum: 203.237.128.0 - 203.237.255.255 netname: KREN-KR descr: Korean Education Network country: KR admin-c: IA142-KR tech-c: IM142-KR status: ALLOCATED PORTABLE mnt-by: MNT-KRNIC-AP mnt-irt: IRT-KRNIC-KR changed: hostmaster@nic.or.kr 20240912 remarks: This information has been partially mirrored by APNIC from remarks: KRNIC. To obtain more specific information, please use the remarks: KRNIC whois server at whois.kisa.or.kr. source: KRNIC person: IP Manager address: 57 Daehak-ro, Jongno-gu, Seoul address: 1 country: KR phone: +82-2-882-5363 e-mail: kindman@kren.kr nic-hdl: IA142-KR mnt-by: MNT-KRNIC-AP remarks: This information has been partially mirrored by APNIC from remarks: KRNIC. To obtain more specific information, please use the remarks: KRNIC whois server at whois.kisa.or.kr. source: KRNIC person: IP Manager address: 57 Daehak-ro, Jongno-gu, Seoul address: 1 country: KR phone: +82-2-882-5363 e-mail: kindman@kren.kr nic-hdl: IM142-KR mnt-by: MNT-KRNIC-AP remarks: This information has been partially mirrored by APNIC from remarks: KRNIC. To obtain more specific information, please use the remarks: KRNIC whois server at whois.kisa.or.kr. source: KRNIC
Overlapping Ranges
BGP prefixes that contain 203.237.128.0/20
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 203.237.128.0/17 | AS17614 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS4766 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS18026 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS23983 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS18031 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS3786 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS38694 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS9318 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS18319 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS18329 | Korean Education Network | 32,768 |
Nearby Ranges
BGP prefixes that overlap with 203.237.0.0/16
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 203.237.128.0/17 | AS17614 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS18026 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS18031 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS18319 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS18329 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS23983 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS3786 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS38694 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS4766 | Korean Education Network | 32,768 |
| 203.237.128.0/17 | AS9318 | Korean Education Network | 32,768 |
| 203.237.96.0/19 | AS9754 | Korean Education Network | 8,192 |
| 203.237.64.0/19 | AS9778 | KISTI | 8,192 |
Hosted domains
There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.
| IP Address | Domain | Domains on this IP |
|---|---|---|
| 203.237.128.80 | dju.ac.kr | 1 |
Hosted domains API
Pingable IPs
9 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 203.237.134.231 |
3.42ms from Seoul,
KR
|
|
| 203.237.128.87 |
4.53ms from Seoul,
KR
|
|
| 203.237.131.30 |
3.38ms 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.
| IP Address | ASN | Details |
|---|---|---|
| 115.183.182.148 |
4.82ms from Beijing,
CN
|
|
| 84.185.114.180 |
4.30ms from Berlin,
DE
|
|
| 136.115.84.148 |
0.12ms from Council Bluffs,
US
|
|
| 62.216.181.164 |
0.56ms from Frankfurt am Main,
DE
|
|
| 151.80.106.36 |
0.12ms from Gravelines,
FR
|
|
| 14.225.246.68 |
1.34ms from Ho Chi Minh City,
VN
|
|
| 94.99.12.228 |
5.78ms from Jeddah,
SA
|
|
| 35.211.152.100 |
0.15ms from Moncks Corner,
US
|
|
| 49.66.119.244 |
4.49ms from Nanjing,
CN
|
|
| 61.206.74.132 |
6.23ms from Osaka,
JP
|
|
| 13.208.173.84 |
0.30ms from Osaka,
JP
|
|
| 153.177.178.180 |
3.13ms from Osaka,
JP
|
|
| 118.6.253.196 |
2.68ms from Osaka,
JP
|
|
| 108.76.154.180 |
5.31ms from San Jose,
US
|
|
| 220.119.169.100 |
7.78ms from Seoul,
KR
|
|
| 92.64.123.4 |
2.50ms from Amsterdam,
NL
|
|
| 73.236.103.36 |
13.41ms from Ashburn,
US
|
|
| 112.35.186.100 |
2.09ms from Beijing,
CN
|
|
| 16.145.201.36 |
0.13ms from Boardman,
US
|
|
| 70.73.79.196 |
8.48ms from Calgary,
CA
|
|
| 98.215.126.4 |
5.60ms from Chicago,
US
|
|
| 34.246.204.244 |
0.21ms from Dublin,
IE
|
|
| 154.196.52.36 |
0.28ms from Frankfurt am Main,
DE
|
|
| 93.218.6.196 |
2.47ms from Hamburg,
DE
|
|
| 47.149.178.84 |
3.25ms from Los Angeles,
US
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
What are IP address ranges?
IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.
Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.
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