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InternetData
65,536 routable4 ASes
/16 subnet

121.204.0.0/16

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
4
announcing ASes
20
announced prefixes
3,531
anonymous addresses

Where it is

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

  1. China65,536 · 100.00%

Who announces it

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

  1. AS4134CHINANET-BACKBONE33,792 · 51.56%
  2. AS133774Fuzhou26,624 · 40.63%
  3. AS133775Xiamen2,560 · 3.91%
  4. AS133776Quanzhou2,560 · 3.91%

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.

20 prefixes
PREFIXORIGINCOUNTRYRPKIPEERSFIRST SEEN
121.204.128.0/18AS133774FuzhouChinaValid172026-10-02
121.204.128.0/19AS133774FuzhouChinaValid172026-10-02
121.204.160.0/21AS133774FuzhouChinaValid172026-10-02
121.204.168.0/22AS133774FuzhouChinaValid172026-10-02
121.204.172.0/23AS133774FuzhouChinaValid172026-10-02
121.204.176.0/20AS133774FuzhouChinaValid172026-10-02
121.204.182.0/24AS133774FuzhouChinaValid172026-10-02
121.204.192.0/21AS133774FuzhouChinaValid172026-10-02
121.204.200.0/21AS133774FuzhouChinaValid172026-10-02
121.204.208.0/21AS133774FuzhouChinaValid172026-10-02
121.204.216.0/22AS133774FuzhouChinaValid172026-10-02
121.204.220.0/23AS133774FuzhouChinaValid172026-10-02
121.204.224.0/21AS133774FuzhouChinaValid172026-10-02
121.204.232.0/23AS133774FuzhouChinaValid172026-10-02
121.204.234.0/23AS133775XiamenChinaValid172026-10-02
121.204.236.0/22AS133775XiamenChinaValid172026-10-02
121.204.240.0/22AS133775XiamenChinaValid172026-10-02
121.204.244.0/22AS133776QuanzhouChinaValid172026-10-02
121.204.248.0/22AS133776QuanzhouChinaValid172026-10-02
121.204.252.0/23AS133776QuanzhouChinaValid172026-10-02

Every /24 inside it

121.204.0.0/24ChinaAS4134CHINANET-BACKBONE32012.50%
121.204.1.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.2.0/24ChinaAS4134CHINANET-BACKBONE602.34%
121.204.3.0/24ChinaAS4134CHINANET-BACKBONE501.95%
121.204.4.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.5.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.6.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.7.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.8.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.9.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.10.0/24ChinaAS4134CHINANET-BACKBONE401.56%
121.204.11.0/24ChinaAS4134CHINANET-BACKBONE602.34%
121.204.12.0/24ChinaAS4134CHINANET-BACKBONE70027.34%
121.204.13.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.14.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.15.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.16.0/24ChinaAS4134CHINANET-BACKBONE164064.06%
121.204.17.0/24ChinaAS4134CHINANET-BACKBONE183071.48%
121.204.18.0/24ChinaAS4134CHINANET-BACKBONE401.56%
121.204.19.0/24ChinaAS4134CHINANET-BACKBONE903.52%
121.204.20.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.21.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.22.0/24ChinaAS4134CHINANET-BACKBONE301.17%
121.204.23.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.24.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.25.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.26.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.27.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.28.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.29.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.30.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.31.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.32.0/24ChinaAS4134CHINANET-BACKBONE200.78%
121.204.33.0/24ChinaAS4134CHINANET-BACKBONE501.95%
121.204.34.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.35.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.36.0/24ChinaAS4134CHINANET-BACKBONE501.95%
121.204.37.0/24ChinaAS4134CHINANET-BACKBONE301.17%
121.204.38.0/24ChinaAS4134CHINANET-BACKBONE301.17%
121.204.39.0/24ChinaAS4134CHINANET-BACKBONE100.39%
121.204.40.0/24ChinaAS4134CHINANET-BACKBONE1907.42%
121.204.41.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.42.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.43.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.44.0/24ChinaAS4134CHINANET-BACKBONE200.78%
121.204.45.0/24ChinaAS4134CHINANET-BACKBONE200.78%
121.204.46.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.47.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.48.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.49.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.50.0/24ChinaAS4134CHINANET-BACKBONE1305.08%
121.204.51.0/24ChinaAS4134CHINANET-BACKBONE1706.64%
121.204.52.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.53.0/24ChinaAS4134CHINANET-BACKBONE100.39%
121.204.54.0/24ChinaAS4134CHINANET-BACKBONE197076.95%
121.204.55.0/24ChinaAS4134CHINANET-BACKBONE195076.17%
121.204.56.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.57.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.58.0/24ChinaAS4134CHINANET-BACKBONE1003.91%
121.204.59.0/24ChinaAS4134CHINANET-BACKBONE1405.47%
121.204.60.0/24ChinaAS4134CHINANET-BACKBONE200.78%
121.204.61.0/24ChinaAS4134CHINANET-BACKBONE100.39%
121.204.62.0/24ChinaAS4134CHINANET-BACKBONE100.39%
121.204.63.0/24ChinaAS4134CHINANET-BACKBONE200.78%
121.204.64.0/24ChinaAS4134CHINANET-BACKBONE401.56%
121.204.65.0/24ChinaAS4134CHINANET-BACKBONE200.78%
121.204.66.0/24ChinaAS4134CHINANET-BACKBONE301.17%
121.204.67.0/24ChinaAS4134CHINANET-BACKBONE401.56%
121.204.68.0/24ChinaAS4134CHINANET-BACKBONE501.95%
121.204.69.0/24ChinaAS4134CHINANET-BACKBONE401.56%
121.204.70.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.71.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.72.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.73.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.74.0/24ChinaAS4134CHINANET-BACKBONE501.95%
121.204.75.0/24ChinaAS4134CHINANET-BACKBONE903.52%
121.204.76.0/24ChinaAS4134CHINANET-BACKBONE501.95%
121.204.77.0/24ChinaAS4134CHINANET-BACKBONE301.17%
121.204.78.0/24ChinaAS4134CHINANET-BACKBONE602.34%
121.204.79.0/24ChinaAS4134CHINANET-BACKBONE401.56%
121.204.80.0/24ChinaAS4134CHINANET-BACKBONE1003.91%
121.204.81.0/24ChinaAS4134CHINANET-BACKBONE1505.86%
121.204.82.0/24ChinaAS4134CHINANET-BACKBONE803.13%
121.204.83.0/24ChinaAS4134CHINANET-BACKBONE1505.86%
121.204.84.0/24ChinaAS4134CHINANET-BACKBONE100.39%
121.204.85.0/24ChinaAS4134CHINANET-BACKBONE301.17%
121.204.86.0/24ChinaAS4134CHINANET-BACKBONE301.17%
121.204.87.0/24ChinaAS4134CHINANET-BACKBONE26010.16%
121.204.88.0/24ChinaAS4134CHINANET-BACKBONE100.39%
121.204.89.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.90.0/24ChinaAS4134CHINANET-BACKBONE202078.91%
121.204.91.0/24ChinaAS4134CHINANET-BACKBONE184071.88%
121.204.92.0/24ChinaAS4134CHINANET-BACKBONE100.39%
121.204.93.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.94.0/24ChinaAS4134CHINANET-BACKBONE200.78%
121.204.95.0/24ChinaAS4134CHINANET-BACKBONE401.56%
121.204.96.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.97.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.98.0/24ChinaAS4134CHINANET-BACKBONE200.78%
121.204.99.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.100.0/24ChinaAS4134CHINANET-BACKBONE301.17%
121.204.101.0/24ChinaAS4134CHINANET-BACKBONE200.78%
121.204.102.0/24ChinaAS4134CHINANET-BACKBONE66025.78%
121.204.103.0/24ChinaAS4134CHINANET-BACKBONE124048.44%
121.204.104.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.105.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.106.0/24ChinaAS4134CHINANET-BACKBONE200.78%
121.204.107.0/24ChinaAS4134CHINANET-BACKBONE501.95%
121.204.108.0/24ChinaAS4134CHINANET-BACKBONE401.56%
121.204.109.0/24ChinaAS4134CHINANET-BACKBONE501.95%
121.204.110.0/24ChinaAS4134CHINANET-BACKBONE401.56%
121.204.111.0/24ChinaAS4134CHINANET-BACKBONE100.39%
121.204.112.0/24ChinaAS4134CHINANET-BACKBONE501.95%
121.204.113.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.114.0/24ChinaAS4134CHINANET-BACKBONE501.95%
121.204.115.0/24ChinaAS4134CHINANET-BACKBONE100.39%
121.204.116.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.117.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.118.0/24ChinaAS4134CHINANET-BACKBONE202078.91%
121.204.119.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.120.0/24ChinaAS4134CHINANET-BACKBONE602.34%
121.204.121.0/24ChinaAS4134CHINANET-BACKBONE301.17%
121.204.122.0/24ChinaAS4134CHINANET-BACKBONE401.56%
121.204.123.0/24ChinaAS4134CHINANET-BACKBONE301.17%
121.204.124.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.125.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.126.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.127.0/24ChinaAS4134CHINANET-BACKBONE100.39%
121.204.128.0/24ChinaAS133774Fuzhou16256100.00%
121.204.129.0/24ChinaAS133774Fuzhou23256100.00%
121.204.130.0/24ChinaAS133774Fuzhou21256100.00%
121.204.131.0/24ChinaAS133774Fuzhou14256100.00%
121.204.132.0/24ChinaAS133774Fuzhou19256100.00%
121.204.133.0/24ChinaAS133774Fuzhou26256100.00%
121.204.134.0/24ChinaAS133774Fuzhou12256100.00%
121.204.135.0/24ChinaAS133774Fuzhou13256100.00%
121.204.136.0/24ChinaAS133774Fuzhou22256100.00%
121.204.137.0/24ChinaAS133774Fuzhou21256100.00%
121.204.138.0/24ChinaAS133774Fuzhou16256100.00%
121.204.139.0/24ChinaAS133774Fuzhou16256100.00%
121.204.140.0/24ChinaAS133774Fuzhou17256100.00%
121.204.141.0/24ChinaAS133774Fuzhou12256100.00%
121.204.142.0/24ChinaAS133774Fuzhou16256100.00%
121.204.143.0/24ChinaAS133774Fuzhou14256100.00%
121.204.144.0/24ChinaAS133774Fuzhou18256100.00%
121.204.145.0/24ChinaAS133774Fuzhou20256100.00%
121.204.146.0/24ChinaAS133774Fuzhou18256100.00%
121.204.147.0/24ChinaAS133774Fuzhou23256100.00%
121.204.148.0/24ChinaAS133774Fuzhou16256100.00%
121.204.149.0/24ChinaAS133774Fuzhou19256100.00%
121.204.150.0/24ChinaAS133774Fuzhou21256100.00%
121.204.151.0/24ChinaAS133774Fuzhou12256100.00%
121.204.152.0/24ChinaAS133774Fuzhou22256100.00%
121.204.153.0/24ChinaAS133774Fuzhou13256100.00%
121.204.154.0/24ChinaAS133774Fuzhou12256100.00%
121.204.155.0/24ChinaAS133774Fuzhou27256100.00%
121.204.156.0/24ChinaAS133774Fuzhou15256100.00%
121.204.157.0/24ChinaAS133774Fuzhou24256100.00%
121.204.158.0/24ChinaAS133774Fuzhou16256100.00%
121.204.159.0/24ChinaAS133774Fuzhou19256100.00%
121.204.160.0/24ChinaAS133774Fuzhou23256100.00%
121.204.161.0/24ChinaAS133774Fuzhou17256100.00%
121.204.162.0/24ChinaAS133774Fuzhou14256100.00%
121.204.163.0/24ChinaAS133774Fuzhou29256100.00%
121.204.164.0/24ChinaAS133774Fuzhou20256100.00%
121.204.165.0/24ChinaAS133774Fuzhou15256100.00%
121.204.166.0/24ChinaAS133774Fuzhou19256100.00%
121.204.167.0/24ChinaAS133774Fuzhou14256100.00%
121.204.168.0/24ChinaAS133774Fuzhou22256100.00%
121.204.169.0/24ChinaAS133774Fuzhou20256100.00%
121.204.170.0/24ChinaAS133774Fuzhou19256100.00%
121.204.171.0/24ChinaAS133774Fuzhou21256100.00%
121.204.172.0/24ChinaAS133774Fuzhou29256100.00%
121.204.173.0/24ChinaAS133774Fuzhou22256100.00%
121.204.174.0/24ChinaAS133774Fuzhou0256100.00%
121.204.175.0/24ChinaAS133774Fuzhou0256100.00%
121.204.176.0/24ChinaAS133774Fuzhou17256100.00%
121.204.177.0/24ChinaAS133774Fuzhou12256100.00%
121.204.178.0/24ChinaAS133774Fuzhou15256100.00%
121.204.179.0/24ChinaAS133774Fuzhou18256100.00%
121.204.180.0/24ChinaAS133774Fuzhou15256100.00%
121.204.181.0/24ChinaAS133774Fuzhou22256100.00%
121.204.182.0/24ChinaAS133774Fuzhou15256100.00%
121.204.183.0/24ChinaAS133774Fuzhou11256100.00%
121.204.184.0/24ChinaAS133774Fuzhou27256100.00%
121.204.185.0/24ChinaAS133774Fuzhou14256100.00%
121.204.186.0/24ChinaAS133774Fuzhou21256100.00%
121.204.187.0/24ChinaAS133774Fuzhou17256100.00%
121.204.188.0/24ChinaAS133774Fuzhou23256100.00%
121.204.189.0/24ChinaAS133774Fuzhou21256100.00%
121.204.190.0/24ChinaAS133774Fuzhou14256100.00%
121.204.191.0/24ChinaAS133774Fuzhou17256100.00%
121.204.192.0/24ChinaAS133774Fuzhou18256100.00%
121.204.193.0/24ChinaAS133774Fuzhou8256100.00%
121.204.194.0/24ChinaAS133774Fuzhou10256100.00%
121.204.195.0/24ChinaAS133774Fuzhou11256100.00%
121.204.196.0/24ChinaAS133774Fuzhou14256100.00%
121.204.197.0/24ChinaAS133774Fuzhou8256100.00%
121.204.198.0/24ChinaAS133774Fuzhou10256100.00%
121.204.199.0/24ChinaAS133774Fuzhou10256100.00%
121.204.200.0/24ChinaAS133774Fuzhou10256100.00%
121.204.201.0/24ChinaAS133774Fuzhou8256100.00%
121.204.202.0/24ChinaAS133774Fuzhou11256100.00%
121.204.203.0/24ChinaAS133774Fuzhou6256100.00%
121.204.204.0/24ChinaAS133774Fuzhou7256100.00%
121.204.205.0/24ChinaAS133774Fuzhou16256100.00%
121.204.206.0/24ChinaAS133774Fuzhou11256100.00%
121.204.207.0/24ChinaAS133774Fuzhou10256100.00%
121.204.208.0/24ChinaAS133774Fuzhou17256100.00%
121.204.209.0/24ChinaAS133774Fuzhou26256100.00%
121.204.210.0/24ChinaAS133774Fuzhou26256100.00%
121.204.211.0/24ChinaAS133774Fuzhou18256100.00%
121.204.212.0/24ChinaAS133774Fuzhou20256100.00%
121.204.213.0/24ChinaAS133774Fuzhou22256100.00%
121.204.214.0/24ChinaAS133774Fuzhou21256100.00%
121.204.215.0/24ChinaAS133774Fuzhou16256100.00%
121.204.216.0/24ChinaAS133774Fuzhou15256100.00%
121.204.217.0/24ChinaAS133774Fuzhou22256100.00%
121.204.218.0/24ChinaAS133774Fuzhou21256100.00%
121.204.219.0/24ChinaAS133774Fuzhou15256100.00%
121.204.220.0/24ChinaAS133774Fuzhou1256100.00%
121.204.221.0/24ChinaAS133774Fuzhou12256100.00%
121.204.222.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.223.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.224.0/24ChinaAS133774Fuzhou0256100.00%
121.204.225.0/24ChinaAS133774Fuzhou0256100.00%
121.204.226.0/24ChinaAS133774Fuzhou0256100.00%
121.204.227.0/24ChinaAS133774Fuzhou1256100.00%
121.204.228.0/24ChinaAS133774Fuzhou0256100.00%
121.204.229.0/24ChinaAS133774Fuzhou0256100.00%
121.204.230.0/24ChinaAS133774Fuzhou0256100.00%
121.204.231.0/24ChinaAS133774Fuzhou0256100.00%
121.204.232.0/24ChinaAS133774Fuzhou0256100.00%
121.204.233.0/24ChinaAS133774Fuzhou2256100.00%
121.204.234.0/24ChinaAS133775Xiamen0256100.00%
121.204.235.0/24ChinaAS133775Xiamen0256100.00%
121.204.236.0/24ChinaAS133775Xiamen0256100.00%
121.204.237.0/24ChinaAS133775Xiamen0256100.00%
121.204.238.0/24ChinaAS133775Xiamen0256100.00%
121.204.239.0/24ChinaAS133775Xiamen0256100.00%
121.204.240.0/24ChinaAS133775Xiamen0256100.00%
121.204.241.0/24ChinaAS133775Xiamen0256100.00%
121.204.242.0/24ChinaAS133775Xiamen0256100.00%
121.204.243.0/24ChinaAS133775Xiamen0256100.00%
121.204.244.0/24ChinaAS133776Quanzhou0256100.00%
121.204.245.0/24ChinaAS133776Quanzhou0256100.00%
121.204.246.0/24ChinaAS133776Quanzhou0256100.00%
121.204.247.0/24ChinaAS133776Quanzhou0256100.00%
121.204.248.0/24ChinaAS133776Quanzhou0256100.00%
121.204.249.0/24ChinaAS133776Quanzhou0256100.00%
121.204.250.0/24ChinaAS133776Quanzhou12256100.00%
121.204.251.0/24ChinaAS133776Quanzhou1256100.00%
121.204.252.0/24ChinaAS133776Quanzhou0256100.00%
121.204.253.0/24ChinaAS133776Quanzhou1256100.00%
121.204.254.0/24ChinaAS4134CHINANET-BACKBONE000.00%
121.204.255.0/24ChinaAS4134CHINANET-BACKBONE000.00%
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.