Skip to content
InternetData
65,536 routable8 ASes
/16 subnet

203.141.0.0/16

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
8
announcing ASes
16
announced prefixes
1,608
anonymous addresses

Where it is

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

  1. Japan65,536 · 100.00%

Who announces it

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

  1. AS2514NTT PC Communications, Inc.12,288 · 18.75%
  2. AS2516KDDI CORPORATION8,192 · 12.50%
  3. AS17518Shiojiri City8,192 · 12.50%
  4. AS9615TOYOHASHI CABLE NETWORK INC.4,096 · 6.25%
  5. AS23816LY Corporation4,096 · 6.25%
  6. AS9607BroadBand Tower, Inc.3,840 · 5.86%
  7. AS10006SECOM Trust Systems Co.,Ltd.3,840 · 5.86%
  8. AS55898LY Corporation256 · 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.

Announced prefixes

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

16 prefixes
PREFIXORIGINCOUNTRYRPKIPEERSFIRST SEEN
203.141.32.0/20AS23816LY CorporationJapanValid172026-10-02
203.141.48.0/22AS9607BroadBand Tower, Inc.JapanValid172026-10-02
203.141.52.0/23AS9607BroadBand Tower, Inc.JapanValid172026-10-02
203.141.54.0/24AS55898LY CorporationJapanValid172026-10-02
203.141.55.0/24AS9607BroadBand Tower, Inc.JapanValid172026-10-02
203.141.56.0/21AS9607BroadBand Tower, Inc.JapanValid172026-10-02
203.141.112.0/20AS9615TOYOHASHI CABLE NETWORK INC.JapanValid172026-10-02
203.141.128.0/19AS2514NTT PC Communications, Inc.JapanNot found172026-10-02
203.141.160.0/19AS2516KDDI CORPORATIONJapanValid172026-10-02
203.141.192.0/19AS17518Shiojiri CityJapanNot found172026-10-02
203.141.224.0/24AS10006SECOM Trust Systems Co.,Ltd.JapanNot found172026-10-02
203.141.226.0/23AS10006SECOM Trust Systems Co.,Ltd.JapanNot found172026-10-02
203.141.228.0/22AS10006SECOM Trust Systems Co.,Ltd.JapanNot found172026-10-02
203.141.232.0/22AS10006SECOM Trust Systems Co.,Ltd.JapanNot found172026-10-02
203.141.236.0/22AS10006SECOM Trust Systems Co.,Ltd.JapanNot found172026-10-02
203.141.240.0/20AS2514NTT PC Communications, Inc.JapanValid172026-10-02

Every /24 inside it

203.141.0.0/24Japan—000.00%
203.141.1.0/24Japan—000.00%
203.141.2.0/24Japan—000.00%
203.141.3.0/24Japan—000.00%
203.141.4.0/24Japan—000.00%
203.141.5.0/24Japan—000.00%
203.141.6.0/24Japan—000.00%
203.141.7.0/24Japan—000.00%
203.141.8.0/24Japan—000.00%
203.141.9.0/24Japan—000.00%
203.141.10.0/24Japan—000.00%
203.141.11.0/24Japan—000.00%
203.141.12.0/24Japan—000.00%
203.141.13.0/24Japan—000.00%
203.141.14.0/24Japan—000.00%
203.141.15.0/24Japan—000.00%
203.141.16.0/24Japan—000.00%
203.141.17.0/24Japan—000.00%
203.141.18.0/24Japan—000.00%
203.141.19.0/24Japan—000.00%
203.141.20.0/24Japan—000.00%
203.141.21.0/24Japan—000.00%
203.141.22.0/24Japan—000.00%
203.141.23.0/24Japan—000.00%
203.141.24.0/24Japan—000.00%
203.141.25.0/24Japan—000.00%
203.141.26.0/24Japan—000.00%
203.141.27.0/24Japan—000.00%
203.141.28.0/24Japan—000.00%
203.141.29.0/24Japan—000.00%
203.141.30.0/24Japan—000.00%
203.141.31.0/24Japan—000.00%
203.141.32.0/24JapanAS23816LY Corporation000.00%
203.141.33.0/24JapanAS23816LY Corporation000.00%
203.141.34.0/24JapanAS23816LY Corporation000.00%
203.141.35.0/24JapanAS23816LY Corporation000.00%
203.141.36.0/24JapanAS23816LY Corporation000.00%
203.141.37.0/24JapanAS23816LY Corporation000.00%
203.141.38.0/24JapanAS23816LY Corporation000.00%
203.141.39.0/24JapanAS23816LY Corporation000.00%
203.141.40.0/24JapanAS23816LY Corporation000.00%
203.141.41.0/24JapanAS23816LY Corporation000.00%
203.141.42.0/24JapanAS23816LY Corporation000.00%
203.141.43.0/24JapanAS23816LY Corporation000.00%
203.141.44.0/24JapanAS23816LY Corporation000.00%
203.141.45.0/24JapanAS23816LY Corporation000.00%
203.141.46.0/24JapanAS23816LY Corporation000.00%
203.141.47.0/24JapanAS23816LY Corporation000.00%
203.141.48.0/24JapanAS9607BroadBand Tower, Inc.2256100.00%
203.141.49.0/24JapanAS9607BroadBand Tower, Inc.8256100.00%
203.141.50.0/24JapanAS9607BroadBand Tower, Inc.0256100.00%
203.141.51.0/24JapanAS9607BroadBand Tower, Inc.0256100.00%
203.141.52.0/24JapanAS9607BroadBand Tower, Inc.0256100.00%
203.141.53.0/24JapanAS9607BroadBand Tower, Inc.0256100.00%
203.141.54.0/24JapanAS55898LY Corporation100.39%
203.141.55.0/24JapanAS9607BroadBand Tower, Inc.0256100.00%
203.141.56.0/24JapanAS9607BroadBand Tower, Inc.5256100.00%
203.141.57.0/24JapanAS9607BroadBand Tower, Inc.8256100.00%
203.141.58.0/24JapanAS9607BroadBand Tower, Inc.0256100.00%
203.141.59.0/24JapanAS9607BroadBand Tower, Inc.0256100.00%
203.141.60.0/24JapanAS9607BroadBand Tower, Inc.2256100.00%
203.141.61.0/24JapanAS9607BroadBand Tower, Inc.0256100.00%
203.141.62.0/24JapanAS9607BroadBand Tower, Inc.2256100.00%
203.141.63.0/24JapanAS9607BroadBand Tower, Inc.0256100.00%
203.141.64.0/24Japan—000.00%
203.141.65.0/24Japan—000.00%
203.141.66.0/24Japan—000.00%
203.141.67.0/24Japan—000.00%
203.141.68.0/24Japan—000.00%
203.141.69.0/24Japan—000.00%
203.141.70.0/24Japan—000.00%
203.141.71.0/24Japan—000.00%
203.141.72.0/24Japan—000.00%
203.141.73.0/24Japan—000.00%
203.141.74.0/24Japan—000.00%
203.141.75.0/24Japan—000.00%
203.141.76.0/24Japan—000.00%
203.141.77.0/24Japan—000.00%
203.141.78.0/24Japan—000.00%
203.141.79.0/24Japan—000.00%
203.141.80.0/24Japan—000.00%
203.141.81.0/24Japan—000.00%
203.141.82.0/24Japan—000.00%
203.141.83.0/24Japan—000.00%
203.141.84.0/24Japan—000.00%
203.141.85.0/24Japan—000.00%
203.141.86.0/24Japan—000.00%
203.141.87.0/24Japan—000.00%
203.141.88.0/24Japan—000.00%
203.141.89.0/24Japan—000.00%
203.141.90.0/24Japan—000.00%
203.141.91.0/24Japan—000.00%
203.141.92.0/24Japan—000.00%
203.141.93.0/24Japan—000.00%
203.141.94.0/24Japan—000.00%
203.141.95.0/24Japan—000.00%
203.141.96.0/24Japan—000.00%
203.141.97.0/24Japan—000.00%
203.141.98.0/24Japan—000.00%
203.141.99.0/24Japan—000.00%
203.141.100.0/24Japan—000.00%
203.141.101.0/24Japan—000.00%
203.141.102.0/24Japan—000.00%
203.141.103.0/24Japan—000.00%
203.141.104.0/24Japan—000.00%
203.141.105.0/24Japan—000.00%
203.141.106.0/24Japan—000.00%
203.141.107.0/24Japan—000.00%
203.141.108.0/24Japan—000.00%
203.141.109.0/24Japan—000.00%
203.141.110.0/24Japan—000.00%
203.141.111.0/24Japan—000.00%
203.141.112.0/24JapanAS9615TOYOHASHI CABLE NETWORK INC.000.00%
203.141.113.0/24JapanAS9615TOYOHASHI CABLE NETWORK INC.000.00%
203.141.114.0/24JapanAS9615TOYOHASHI CABLE NETWORK INC.000.00%
203.141.115.0/24JapanAS9615TOYOHASHI CABLE NETWORK INC.000.00%
203.141.116.0/24JapanAS9615TOYOHASHI CABLE NETWORK INC.000.00%
203.141.117.0/24JapanAS9615TOYOHASHI CABLE NETWORK INC.000.00%
203.141.118.0/24JapanAS9615TOYOHASHI CABLE NETWORK INC.000.00%
203.141.119.0/24JapanAS9615TOYOHASHI CABLE NETWORK INC.000.00%
203.141.120.0/24JapanAS9615TOYOHASHI CABLE NETWORK INC.100.39%
203.141.121.0/24JapanAS9615TOYOHASHI CABLE NETWORK INC.200.78%
203.141.122.0/24JapanAS9615TOYOHASHI CABLE NETWORK INC.501.95%
203.141.123.0/24JapanAS9615TOYOHASHI CABLE NETWORK INC.100.39%
203.141.124.0/24JapanAS9615TOYOHASHI CABLE NETWORK INC.200.78%
203.141.125.0/24JapanAS9615TOYOHASHI CABLE NETWORK INC.301.17%
203.141.126.0/24JapanAS9615TOYOHASHI CABLE NETWORK INC.301.17%
203.141.127.0/24JapanAS9615TOYOHASHI CABLE NETWORK INC.200.78%
203.141.128.0/24JapanAS2514NTT PC Communications, Inc.1925398.83%
203.141.129.0/24JapanAS2514NTT PC Communications, Inc.82256100.00%
203.141.130.0/24JapanAS2514NTT PC Communications, Inc.15256100.00%
203.141.131.0/24JapanAS2514NTT PC Communications, Inc.2256100.00%
203.141.132.0/24JapanAS2514NTT PC Communications, Inc.91256100.00%
203.141.133.0/24JapanAS2514NTT PC Communications, Inc.71256100.00%
203.141.134.0/24JapanAS2514NTT PC Communications, Inc.71256100.00%
203.141.135.0/24JapanAS2514NTT PC Communications, Inc.1256100.00%
203.141.136.0/24JapanAS2514NTT PC Communications, Inc.4519275.00%
203.141.137.0/24JapanAS2514NTT PC Communications, Inc.91256100.00%
203.141.138.0/24JapanAS2514NTT PC Communications, Inc.81256100.00%
203.141.139.0/24JapanAS2514NTT PC Communications, Inc.77256100.00%
203.141.140.0/24JapanAS2514NTT PC Communications, Inc.0256100.00%
203.141.141.0/24JapanAS2514NTT PC Communications, Inc.44017.19%
203.141.142.0/24JapanAS2514NTT PC Communications, Inc.1725599.61%
203.141.143.0/24JapanAS2514NTT PC Communications, Inc.0256100.00%
203.141.144.0/24JapanAS2514NTT PC Communications, Inc.84256100.00%
203.141.145.0/24JapanAS2514NTT PC Communications, Inc.1256100.00%
203.141.146.0/24JapanAS2514NTT PC Communications, Inc.92256100.00%
203.141.147.0/24JapanAS2514NTT PC Communications, Inc.0256100.00%
203.141.148.0/24JapanAS2514NTT PC Communications, Inc.32256100.00%
203.141.149.0/24JapanAS2514NTT PC Communications, Inc.63256100.00%
203.141.150.0/24JapanAS2514NTT PC Communications, Inc.3256100.00%
203.141.151.0/24JapanAS2514NTT PC Communications, Inc.27010.55%
203.141.152.0/24JapanAS2514NTT PC Communications, Inc.86256100.00%
203.141.153.0/24JapanAS2514NTT PC Communications, Inc.2256100.00%
203.141.154.0/24JapanAS2514NTT PC Communications, Inc.75256100.00%
203.141.155.0/24JapanAS2514NTT PC Communications, Inc.83256100.00%
203.141.156.0/24JapanAS2514NTT PC Communications, Inc.83256100.00%
203.141.157.0/24JapanAS2514NTT PC Communications, Inc.81256100.00%
203.141.158.0/24JapanAS2514NTT PC Communications, Inc.69256100.00%
203.141.159.0/24JapanAS2514NTT PC Communications, Inc.47256100.00%
203.141.160.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.161.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.162.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.163.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.164.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.165.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.166.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.167.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.168.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.169.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.170.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.171.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.172.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.173.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.174.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.175.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.176.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.177.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.178.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.179.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.180.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.181.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.182.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.183.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.184.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.185.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.186.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.187.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.188.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.189.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.190.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.191.0/24JapanAS2516KDDI CORPORATION000.00%
203.141.192.0/24JapanAS17518Shiojiri City000.00%
203.141.193.0/24JapanAS17518Shiojiri City000.00%
203.141.194.0/24JapanAS17518Shiojiri City000.00%
203.141.195.0/24JapanAS17518Shiojiri City000.00%
203.141.196.0/24JapanAS17518Shiojiri City100.39%
203.141.197.0/24JapanAS17518Shiojiri City000.00%
203.141.198.0/24JapanAS17518Shiojiri City200.78%
203.141.199.0/24JapanAS17518Shiojiri City200.78%
203.141.200.0/24JapanAS17518Shiojiri City301.17%
203.141.201.0/24JapanAS17518Shiojiri City100.39%
203.141.202.0/24JapanAS17518Shiojiri City000.00%
203.141.203.0/24JapanAS17518Shiojiri City401.56%
203.141.204.0/24JapanAS17518Shiojiri City401.56%
203.141.205.0/24JapanAS17518Shiojiri City602.34%
203.141.206.0/24JapanAS17518Shiojiri City000.00%
203.141.207.0/24JapanAS17518Shiojiri City000.00%
203.141.208.0/24JapanAS17518Shiojiri City000.00%
203.141.209.0/24JapanAS17518Shiojiri City000.00%
203.141.210.0/24JapanAS17518Shiojiri City000.00%
203.141.211.0/24JapanAS17518Shiojiri City000.00%
203.141.212.0/24JapanAS17518Shiojiri City000.00%
203.141.213.0/24JapanAS17518Shiojiri City000.00%
203.141.214.0/24JapanAS17518Shiojiri City000.00%
203.141.215.0/24JapanAS17518Shiojiri City000.00%
203.141.216.0/24JapanAS17518Shiojiri City000.00%
203.141.217.0/24JapanAS17518Shiojiri City000.00%
203.141.218.0/24JapanAS17518Shiojiri City000.00%
203.141.219.0/24JapanAS17518Shiojiri City000.00%
203.141.220.0/24JapanAS17518Shiojiri City000.00%
203.141.221.0/24JapanAS17518Shiojiri City000.00%
203.141.222.0/24JapanAS17518Shiojiri City100.39%
203.141.223.0/24JapanAS17518Shiojiri City200.78%
203.141.224.0/24JapanAS10006SECOM Trust Systems Co.,Ltd.000.00%
203.141.225.0/24Japan—000.00%
203.141.226.0/24JapanAS10006SECOM Trust Systems Co.,Ltd.000.00%
203.141.227.0/24JapanAS10006SECOM Trust Systems Co.,Ltd.000.00%
203.141.228.0/24JapanAS10006SECOM Trust Systems Co.,Ltd.000.00%
203.141.229.0/24JapanAS10006SECOM Trust Systems Co.,Ltd.000.00%
203.141.230.0/24JapanAS10006SECOM Trust Systems Co.,Ltd.000.00%
203.141.231.0/24JapanAS10006SECOM Trust Systems Co.,Ltd.000.00%
203.141.232.0/24JapanAS10006SECOM Trust Systems Co.,Ltd.000.00%
203.141.233.0/24JapanAS10006SECOM Trust Systems Co.,Ltd.000.00%
203.141.234.0/24JapanAS10006SECOM Trust Systems Co.,Ltd.000.00%
203.141.235.0/24JapanAS10006SECOM Trust Systems Co.,Ltd.000.00%
203.141.236.0/24JapanAS10006SECOM Trust Systems Co.,Ltd.000.00%
203.141.237.0/24JapanAS10006SECOM Trust Systems Co.,Ltd.000.00%
203.141.238.0/24JapanAS10006SECOM Trust Systems Co.,Ltd.000.00%
203.141.239.0/24JapanAS10006SECOM Trust Systems Co.,Ltd.000.00%
203.141.240.0/24JapanAS2514NTT PC Communications, Inc.000.00%
203.141.241.0/24JapanAS2514NTT PC Communications, Inc.000.00%
203.141.242.0/24JapanAS2514NTT PC Communications, Inc.000.00%
203.141.243.0/24JapanAS2514NTT PC Communications, Inc.000.00%
203.141.244.0/24JapanAS2514NTT PC Communications, Inc.000.00%
203.141.245.0/24JapanAS2514NTT PC Communications, Inc.000.00%
203.141.246.0/24JapanAS2514NTT PC Communications, Inc.000.00%
203.141.247.0/24JapanAS2514NTT PC Communications, Inc.000.00%
203.141.248.0/24JapanAS2514NTT PC Communications, Inc.000.00%
203.141.249.0/24JapanAS2514NTT PC Communications, Inc.000.00%
203.141.250.0/24JapanAS2514NTT PC Communications, Inc.000.00%
203.141.251.0/24JapanAS2514NTT PC Communications, Inc.000.00%
203.141.252.0/24JapanAS2514NTT PC Communications, Inc.000.00%
203.141.253.0/24JapanAS2514NTT PC Communications, Inc.000.00%
203.141.254.0/24JapanAS2514NTT PC Communications, Inc.000.00%
203.141.255.0/24JapanAS2514NTT PC Communications, Inc.000.00%
00 · Evaluate

Test the real build first.

An evaluation license puts a full current build in your hands, with no sampling, so you can measure it against your own traffic before anyone talks about terms.

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.
Annual terms, a named contact, and monthly, quarterly or yearly payment.