1. All IP Ranges
  2. 121.0.0.0/8
  3. 121.137.0.0/16
  4. AS46009  | 121.137.87.0/24

121.137.87.0/24

AS46009  ·  YABESK

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Summary

Country South Korea
Domain kt.com
ASN AS46009
Parent Range 121.128.0.0/11
Registry APNIC
ID KORNET

WHOIS Details

inetnum:        121.128.0.0 - 121.159.255.255
netname:        KORNET
descr:          Korea Telecom
admin-c:        IM667-AP
tech-c:         IM667-AP
country:        KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
changed:        hostmaster@nic.or.kr 20170203
source:         APNIC

irt:            IRT-KRNIC-KR
address:        Seoul Songpa-gu Jungdae-ro 135
e-mail:         hostmaster@nic.or.kr
abuse-mailbox:  hostmaster@nic.or.kr
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 20150513
source:         APNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IM667-AP
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 20170328
source:         APNIC

inetnum:        121.128.0.0 - 121.159.255.255
netname:        KORNET-KR
descr:          Korea Telecom
country:        KR
admin-c:        IA9-KR
tech-c:         IM9-KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
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.krnic.net.
changed:        hostmaster@nic.or.kr
source:         KRNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IA9-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IM9-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

Overlapping Ranges

BGP prefixes that contain 121.137.87.0/24

Range ASN Company Num of IPs
121.128.0.0/11 AS10040 Korea Telecom 2,097,152
121.128.0.0/11 AS131792 Korea Telecom 2,097,152
121.128.0.0/11 AS152214 Korea Telecom 2,097,152
121.128.0.0/11 AS17588 Korea Telecom 2,097,152
121.128.0.0/11 AS17834 Korea Telecom 2,097,152
121.128.0.0/11 AS18023 Korea Telecom 2,097,152
121.128.0.0/11 AS18333 Korea Telecom 2,097,152
121.128.0.0/11 AS23591 Korea Telecom 2,097,152
121.128.0.0/11 AS3786 Korea Telecom 2,097,152
121.128.0.0/11 AS38122 Korea Telecom 2,097,152
121.128.0.0/11 AS38126 Korea Telecom 2,097,152
121.128.0.0/11 AS38394 Korea Telecom 2,097,152
121.128.0.0/11 AS38395 Korea Telecom 2,097,152
121.128.0.0/11 AS38399 Korea Telecom 2,097,152
121.128.0.0/11 AS38412 Korea Telecom 2,097,152
121.128.0.0/11 AS38697 Korea Telecom 2,097,152
121.128.0.0/11 AS45401 Korea Telecom 2,097,152
121.128.0.0/11 AS45404 Korea Telecom 2,097,152
121.128.0.0/11 AS46002 Korea Telecom 2,097,152
121.128.0.0/11 AS46009 Korea Telecom 2,097,152
121.128.0.0/11 AS4766 Korea Telecom 2,097,152
121.128.0.0/11 AS4790 Korea Telecom 2,097,152
121.128.0.0/11 AS55592 Korea Telecom 2,097,152
121.128.0.0/11 AS55593 Korea Telecom 2,097,152
121.128.0.0/11 AS55630 Korea Telecom 2,097,152
121.128.0.0/11 AS9273 Korea Telecom 2,097,152
121.128.0.0/11 AS9526 Korea Telecom 2,097,152
121.128.0.0/11 AS9530 Korea Telecom 2,097,152
121.128.0.0/11 AS9638 Korea Telecom 2,097,152
121.128.0.0/11 AS9647 Korea Telecom 2,097,152
121.128.0.0/11 AS9684 Korea Telecom 2,097,152
121.128.0.0/11 AS9696 Korea Telecom 2,097,152
121.128.0.0/11 AS9776 Korea Telecom 2,097,152
121.128.0.0/11 AS9856 Korea Telecom 2,097,152
121.128.0.0/11 AS9862 Korea Telecom 2,097,152
121.128.0.0/11 AS9870 Korea Telecom 2,097,152
121.128.0.0/11 AS9968 Korea Telecom 2,097,152

Nearby Ranges

BGP prefixes that overlap with 121.137.0.0/16

Range ASN Company Num of IPs
121.128.0.0/11 AS10040 Korea Telecom 2,097,152
121.128.0.0/11 AS131792 Korea Telecom 2,097,152
121.128.0.0/11 AS152214 Korea Telecom 2,097,152
121.128.0.0/11 AS17588 Korea Telecom 2,097,152
121.128.0.0/11 AS17834 Korea Telecom 2,097,152
121.128.0.0/11 AS18023 Korea Telecom 2,097,152
121.128.0.0/11 AS18333 Korea Telecom 2,097,152
121.128.0.0/11 AS23591 Korea Telecom 2,097,152
121.128.0.0/11 AS3786 Korea Telecom 2,097,152
121.128.0.0/11 AS38122 Korea Telecom 2,097,152
121.128.0.0/11 AS38126 Korea Telecom 2,097,152
121.128.0.0/11 AS38394 Korea Telecom 2,097,152
121.128.0.0/11 AS38395 Korea Telecom 2,097,152
121.128.0.0/11 AS38399 Korea Telecom 2,097,152
121.128.0.0/11 AS38412 Korea Telecom 2,097,152
121.128.0.0/11 AS38697 Korea Telecom 2,097,152
121.128.0.0/11 AS45401 Korea Telecom 2,097,152
121.128.0.0/11 AS45404 Korea Telecom 2,097,152
121.128.0.0/11 AS46002 Korea Telecom 2,097,152
121.128.0.0/11 AS46009 Korea Telecom 2,097,152
121.128.0.0/11 AS4766 Korea Telecom 2,097,152
121.128.0.0/11 AS4790 Korea Telecom 2,097,152
121.128.0.0/11 AS55592 Korea Telecom 2,097,152
121.128.0.0/11 AS55593 Korea Telecom 2,097,152
121.128.0.0/11 AS55630 Korea Telecom 2,097,152
121.128.0.0/11 AS9273 Korea Telecom 2,097,152
121.128.0.0/11 AS9526 Korea Telecom 2,097,152
121.128.0.0/11 AS9530 Korea Telecom 2,097,152
121.128.0.0/11 AS9638 Korea Telecom 2,097,152
121.128.0.0/11 AS9647 Korea Telecom 2,097,152
121.128.0.0/11 AS9684 Korea Telecom 2,097,152
121.128.0.0/11 AS9696 Korea Telecom 2,097,152
121.128.0.0/11 AS9776 Korea Telecom 2,097,152
121.128.0.0/11 AS9856 Korea Telecom 2,097,152
121.128.0.0/11 AS9862 Korea Telecom 2,097,152
121.128.0.0/11 AS9870 Korea Telecom 2,097,152
121.128.0.0/11 AS9968 Korea Telecom 2,097,152

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity
Read more

Pingable IPs

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

IP Address ASN Details
121.137.87.7 AS4766 Korea Telecom 1.14ms 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
130.37.199.8 AS1103 SURF B.V. 0.91ms from Amsterdam, NL
18.245.108.8 AS16509 Amazon.com, Inc. 0.54ms from Dallas, US
20.165.141.8 AS8075 Microsoft Corporation 3.17ms from Denver, US
68.102.33.56 AS22773 Cox Communications Inc. 8.10ms from Kansas City, US
60.22.74.168 AS4837 CHINA UNICOM China169 Backbone 7.34ms from Liaoyang, CN
93.88.21.232 AS42130 RUIZ & COSTA INVERSIONES SL 6.99ms from Madrid, ES
83.100.239.152 AS12390 KCOM GROUP LIMITED 3.25ms from Manchester, GB
90.179.208.232 AS5610 O2 Czech Republic, a.s. 11.23ms from Prague, CZ
218.81.87.88 AS4812 China Telecom (Group) 3.05ms from Shanghai, CN
86.59.221.88 AS5483 Magyar Telekom Plc. 0.89ms from Budapest, HU
107.194.147.136 AS7018 AT&T Enterprises, LLC 10.73ms from Chicago, US
18.192.238.136 AS16509 Amazon.com, Inc. 0.19ms from Frankfurt am Main, DE
183.159.168.104 AS4134 CHINANET-BACKBONE 4.52ms from Hangzhou, CN
78.171.134.56 AS9121 Turk Telekomunikasyon Anonim Sirketi 2.07ms from Istanbul, TR
46.252.65.216 AS6908 Datahop - Six Degrees 0.83ms from London, GB
91.126.115.232 AS35699 Adamo Telecom Iberia S.A. 1.36ms from Madrid, ES
195.49.177.168 AS49650 Everex Comunicaciones, S.A. 0.83ms from Madrid, ES
79.51.83.216 AS3269 Telecom Italia S.p.A. 1.88ms from Milan, IT
88.50.47.24 AS3269 Telecom Italia S.p.A. 0.87ms from Milan, IT
38.153.88.120 AS55286 B2 Net Solutions Inc. 0.48ms from Montreal, CA
153.129.100.72 AS4713 NTT Communications Corporation 8.85ms from Osaka, JP
119.200.31.24 AS4766 Korea Telecom 5.08ms from Seoul, KR
121.116.111.136 AS4713 NTT Communications Corporation 9.21ms from Tokyo, JP
97.200.143.104 AS6167 Verizon Business 8.50ms from Atlanta, US
18.237.241.248 AS16509 Amazon.com, Inc. 0.29ms from Boardman, US

Traceroute

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

$
traceroute -a -n -q1 121.137.87.2
traceroute to 121.137.87.2 (121.137.87.2): 64 hops max, 52 byte packets
3 *
4 *
6 *
7 [AS4766] 59.12.19.210 3.025 ms
8 [AS46009] 121.137.87.2 2.861 ms
Measurement taken from IPinfo ProbeNet in Seoul, KR
On

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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