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InternetData
65,536 routable3 ASes
/16 subnet

121.1.0.0/16

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
3
countries
3
announcing ASes
16
announced prefixes
3,230
anonymous addresses

Where it is

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

  1. Japan32,768 · 50.00%
  2. South Korea16,384 · 25.00%
  3. Philippines16,384 · 25.00%

Who announces it

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

  1. AS4685Asahi Net32,768 · 50.00%
  2. AS9694Seokyung Cable Television Co.. Ltd.16,384 · 25.00%
  3. AS10139Smart Broadband, Inc.16,384 · 25.00%

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.

Announced prefixes

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

16 prefixes
PREFIXORIGINCOUNTRYRPKIPEERSFIRST SEEN
121.1.0.0/18AS10139Smart Broadband, Inc.Philippinesnot found162026-10-02
121.1.16.0/20AS10139Smart Broadband, Inc.Philippinesvalid162026-10-02
121.1.24.0/21AS10139Smart Broadband, Inc.Philippinesvalid162026-10-02
121.1.32.0/20AS10139Smart Broadband, Inc.Philippinesvalid162026-10-02
121.1.48.0/20AS10139Smart Broadband, Inc.Philippinesvalid162026-10-02
121.1.52.0/22AS10139Smart Broadband, Inc.Philippinesvalid162026-10-02
121.1.64.0/18AS9694Seokyung Cable Television Co.. Ltd.South Koreanot found172026-10-02
121.1.64.0/21AS9694Seokyung Cable Television Co.. Ltd.South Koreanot found172026-10-02
121.1.72.0/21AS9694Seokyung Cable Television Co.. Ltd.South Koreanot found172026-10-02
121.1.80.0/21AS9694Seokyung Cable Television Co.. Ltd.South Koreanot found172026-10-02
121.1.88.0/21AS9694Seokyung Cable Television Co.. Ltd.South Koreanot found172026-10-02
121.1.96.0/21AS9694Seokyung Cable Television Co.. Ltd.South Koreanot found172026-10-02
121.1.104.0/21AS9694Seokyung Cable Television Co.. Ltd.South Koreanot found162026-10-02
121.1.112.0/21AS9694Seokyung Cable Television Co.. Ltd.South Koreanot found172026-10-02
121.1.120.0/21AS9694Seokyung Cable Television Co.. Ltd.South Koreanot found172026-10-02
121.1.128.0/17AS4685Asahi NetJapanvalid162026-10-02

Every /24 inside it

121.1.0.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.1.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.2.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.3.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.4.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.5.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.6.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.7.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.8.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.9.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.10.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.11.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.12.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.13.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.14.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.15.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.16.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.17.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.18.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.19.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.20.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.21.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.22.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.23.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.24.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.25.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.26.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.27.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.28.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.29.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.30.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.31.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.32.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.33.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.34.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.35.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.36.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.37.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.38.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.39.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.40.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.41.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.42.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.43.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.44.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.45.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.46.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.47.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.48.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.49.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.50.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.51.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.52.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.53.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.54.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.55.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.56.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.57.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.58.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.59.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.60.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.61.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.62.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.63.0/24PhilippinesAS10139Smart Broadband, Inc.000.00%
121.1.64.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.200.78%
121.1.65.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.100.39%
121.1.66.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.501.95%
121.1.67.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.100.39%
121.1.68.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.000.00%
121.1.69.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.401.56%
121.1.70.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.602.34%
121.1.71.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.501.95%
121.1.72.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.301.17%
121.1.73.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.401.56%
121.1.74.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.200.78%
121.1.75.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.1003.91%
121.1.76.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.903.52%
121.1.77.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.000.00%
121.1.78.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.301.17%
121.1.79.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.401.56%
121.1.80.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.200.78%
121.1.81.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.301.17%
121.1.82.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.200.78%
121.1.83.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.602.34%
121.1.84.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.702.73%
121.1.85.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.000.00%
121.1.86.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.401.56%
121.1.87.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.602.34%
121.1.88.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.602.34%
121.1.89.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.301.17%
121.1.90.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.602.34%
121.1.91.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.000.00%
121.1.92.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.200.78%
121.1.93.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.501.95%
121.1.94.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.000.00%
121.1.95.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.301.17%
121.1.96.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.1104.30%
121.1.97.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.200.78%
121.1.98.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.702.73%
121.1.99.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.1104.30%
121.1.100.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.1003.91%
121.1.101.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.602.34%
121.1.102.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.000.00%
121.1.103.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.000.00%
121.1.104.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.100.39%
121.1.105.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.401.56%
121.1.106.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.501.95%
121.1.107.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.702.73%
121.1.108.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.401.56%
121.1.109.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.301.17%
121.1.110.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.903.52%
121.1.111.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.000.00%
121.1.112.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.000.00%
121.1.113.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.000.00%
121.1.114.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.100.39%
121.1.115.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.200.78%
121.1.116.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.100.39%
121.1.117.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.000.00%
121.1.118.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.000.00%
121.1.119.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.1104.30%
121.1.120.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.401.56%
121.1.121.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.000.00%
121.1.122.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.000.00%
121.1.123.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.301.17%
121.1.124.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.301.17%
121.1.125.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.000.00%
121.1.126.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.1003.91%
121.1.127.0/24South KoreaAS9694Seokyung Cable Television Co.. Ltd.000.00%
121.1.128.0/24JapanAS4685Asahi Net000.00%
121.1.129.0/24JapanAS4685Asahi Net000.00%
121.1.130.0/24JapanAS4685Asahi Net000.00%
121.1.131.0/24JapanAS4685Asahi Net100.39%
121.1.132.0/24JapanAS4685Asahi Net63024.61%
121.1.133.0/24JapanAS4685Asahi Net69026.95%
121.1.134.0/24JapanAS4685Asahi Net100039.06%
121.1.135.0/24JapanAS4685Asahi Net80031.25%
121.1.136.0/24JapanAS4685Asahi Net000.00%
121.1.137.0/24JapanAS4685Asahi Net101039.45%
121.1.138.0/24JapanAS4685Asahi Net1305.08%
121.1.139.0/24JapanAS4685Asahi Net30011.72%
121.1.140.0/24JapanAS4685Asahi Net50019.53%
121.1.141.0/24JapanAS4685Asahi Net64025.00%
121.1.142.0/24JapanAS4685Asahi Net77030.08%
121.1.143.0/24JapanAS4685Asahi Net38014.84%
121.1.144.0/24JapanAS4685Asahi Net64025.00%
121.1.145.0/24JapanAS4685Asahi Net52020.31%
121.1.146.0/24JapanAS4685Asahi Net2409.38%
121.1.147.0/24JapanAS4685Asahi Net47018.36%
121.1.148.0/24JapanAS4685Asahi Net71027.73%
121.1.149.0/24JapanAS4685Asahi Net75029.30%
121.1.150.0/24JapanAS4685Asahi Net75029.30%
121.1.151.0/24JapanAS4685Asahi Net47018.36%
121.1.152.0/24JapanAS4685Asahi Net89034.77%
121.1.153.0/24JapanAS4685Asahi Net32012.50%
121.1.154.0/24JapanAS4685Asahi Net2007.81%
121.1.155.0/24JapanAS4685Asahi Net68026.56%
121.1.156.0/24JapanAS4685Asahi Net000.00%
121.1.157.0/24JapanAS4685Asahi Net000.00%
121.1.158.0/24JapanAS4685Asahi Net200.78%
121.1.159.0/24JapanAS4685Asahi Net100.39%
121.1.160.0/24JapanAS4685Asahi Net100.39%
121.1.161.0/24JapanAS4685Asahi Net000.00%
121.1.162.0/24JapanAS4685Asahi Net000.00%
121.1.163.0/24JapanAS4685Asahi Net000.00%
121.1.164.0/24JapanAS4685Asahi Net000.00%
121.1.165.0/24JapanAS4685Asahi Net42016.41%
121.1.166.0/24JapanAS4685Asahi Net91035.55%
121.1.167.0/24JapanAS4685Asahi Net56021.88%
121.1.168.0/24JapanAS4685Asahi Net000.00%
121.1.169.0/24JapanAS4685Asahi Net000.00%
121.1.170.0/24JapanAS4685Asahi Net000.00%
121.1.171.0/24JapanAS4685Asahi Net000.00%
121.1.172.0/24JapanAS4685Asahi Net1104.30%
121.1.173.0/24JapanAS4685Asahi Net1807.03%
121.1.174.0/24JapanAS4685Asahi Net2509.77%
121.1.175.0/24JapanAS4685Asahi Net1505.86%
121.1.176.0/24JapanAS4685Asahi Net26010.16%
121.1.177.0/24JapanAS4685Asahi Net1907.42%
121.1.178.0/24JapanAS4685Asahi Net27010.55%
121.1.179.0/24JapanAS4685Asahi Net1505.86%
121.1.180.0/24JapanAS4685Asahi Net000.00%
121.1.181.0/24JapanAS4685Asahi Net000.00%
121.1.182.0/24JapanAS4685Asahi Net000.00%
121.1.183.0/24JapanAS4685Asahi Net000.00%
121.1.184.0/24JapanAS4685Asahi Net000.00%
121.1.185.0/24JapanAS4685Asahi Net000.00%
121.1.186.0/24JapanAS4685Asahi Net000.00%
121.1.187.0/24JapanAS4685Asahi Net000.00%
121.1.188.0/24JapanAS4685Asahi Net000.00%
121.1.189.0/24JapanAS4685Asahi Net000.00%
121.1.190.0/24JapanAS4685Asahi Net000.00%
121.1.191.0/24JapanAS4685Asahi Net000.00%
121.1.192.0/24JapanAS4685Asahi Net000.00%
121.1.193.0/24JapanAS4685Asahi Net000.00%
121.1.194.0/24JapanAS4685Asahi Net84032.81%
121.1.195.0/24JapanAS4685Asahi Net000.00%
121.1.196.0/24JapanAS4685Asahi Net000.00%
121.1.197.0/24JapanAS4685Asahi Net000.00%
121.1.198.0/24JapanAS4685Asahi Net000.00%
121.1.199.0/24JapanAS4685Asahi Net000.00%
121.1.200.0/24JapanAS4685Asahi Net000.00%
121.1.201.0/24JapanAS4685Asahi Net000.00%
121.1.202.0/24JapanAS4685Asahi Net000.00%
121.1.203.0/24JapanAS4685Asahi Net000.00%
121.1.204.0/24JapanAS4685Asahi Net000.00%
121.1.205.0/24JapanAS4685Asahi Net000.00%
121.1.206.0/24JapanAS4685Asahi Net000.00%
121.1.207.0/24JapanAS4685Asahi Net000.00%
121.1.208.0/24JapanAS4685Asahi Net128050.00%
121.1.209.0/24JapanAS4685Asahi Net000.00%
121.1.210.0/24JapanAS4685Asahi Net000.00%
121.1.211.0/24JapanAS4685Asahi Net52020.31%
121.1.212.0/24JapanAS4685Asahi Net100.39%
121.1.213.0/24JapanAS4685Asahi Net301.17%
121.1.214.0/24JapanAS4685Asahi Net501.95%
121.1.215.0/24JapanAS4685Asahi Net200.78%
121.1.216.0/24JapanAS4685Asahi Net401.56%
121.1.217.0/24JapanAS4685Asahi Net501.95%
121.1.218.0/24JapanAS4685Asahi Net301.17%
121.1.219.0/24JapanAS4685Asahi Net100.39%
121.1.220.0/24JapanAS4685Asahi Net000.00%
121.1.221.0/24JapanAS4685Asahi Net200.78%
121.1.222.0/24JapanAS4685Asahi Net100.39%
121.1.223.0/24JapanAS4685Asahi Net200.78%
121.1.224.0/24JapanAS4685Asahi Net000.00%
121.1.225.0/24JapanAS4685Asahi Net000.00%
121.1.226.0/24JapanAS4685Asahi Net100.39%
121.1.227.0/24JapanAS4685Asahi Net000.00%
121.1.228.0/24JapanAS4685Asahi Net000.00%
121.1.229.0/24JapanAS4685Asahi Net000.00%
121.1.230.0/24JapanAS4685Asahi Net100.39%
121.1.231.0/24JapanAS4685Asahi Net200.78%
121.1.232.0/24JapanAS4685Asahi Net000.00%
121.1.233.0/24JapanAS4685Asahi Net100.39%
121.1.234.0/24JapanAS4685Asahi Net100.39%
121.1.235.0/24JapanAS4685Asahi Net75029.30%
121.1.236.0/24JapanAS4685Asahi Net87033.98%
121.1.237.0/24JapanAS4685Asahi Net81031.64%
121.1.238.0/24JapanAS4685Asahi Net84032.81%
121.1.239.0/24JapanAS4685Asahi Net000.00%
121.1.240.0/24JapanAS4685Asahi Net000.00%
121.1.241.0/24JapanAS4685Asahi Net000.00%
121.1.242.0/24JapanAS4685Asahi Net000.00%
121.1.243.0/24JapanAS4685Asahi Net1305.08%
121.1.244.0/24JapanAS4685Asahi Net65025.39%
121.1.245.0/24JapanAS4685Asahi Net1706.64%
121.1.246.0/24JapanAS4685Asahi Net000.00%
121.1.247.0/24JapanAS4685Asahi Net000.00%
121.1.248.0/24JapanAS4685Asahi Net79030.86%
121.1.249.0/24JapanAS4685Asahi Net78030.47%
121.1.250.0/24JapanAS4685Asahi Net80031.25%
121.1.251.0/24JapanAS4685Asahi Net89034.77%
121.1.252.0/24JapanAS4685Asahi Net66025.78%
121.1.253.0/24JapanAS4685Asahi Net69026.95%
121.1.254.0/24JapanAS4685Asahi Net82032.03%
121.1.255.0/24JapanAS4685Asahi Net38014.84%
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