192.51.0.0/16

Where this subnet is, who announces it, and what our databases hold in it. Below, every /24 inside it; open one for its addresses.

192.50.0.0/16 192.52.0.0/16

65,536

routable addresses

65,536

geolocated

countries

announcing ASes

announced prefixes

118

anonymous addresses

Where it is

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

Japan58,624 · 89.45%
Norway4,096 · 6.25%
United States768 · 1.17%
China512 · 0.78%
India512 · 0.78%
Australia256 · 0.39%
Ivory Coast256 · 0.39%
South Korea256 · 0.39%
New Zealand256 · 0.39%

Who announces it

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

AS2501The University of Tokyo4,096 · 6.25%
AS17511OPTAGE Inc.2,048 · 3.13%
AS2907Research Organization of Information and Systems, National Institute of Informatics1,536 · 2.34%
AS21976NJEDge.Net, Inc.512 · 0.78%
AS2116GLOBALCONNECT AS256 · 0.39%
AS2510FUJITSU LIMITED256 · 0.39%
AS4680Mitsubishi Electric Information Network Corporation256 · 0.39%
AS8220COLT Technology Services Group Limited256 · 0.39%
AS10021KVH Co.,Ltd256 · 0.39%
AS17944Japan Weather Association256 · 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.

VPN IP27
0.04%
Residential Proxy IP91
0.14%
Datacenter Proxy IP0
None here
Mobile Proxy IP0
None here
Public Proxy IP0
None here
Tor IP0
None here
Relay IP0
None here
Hosting IP512
0.78%
CDN IP0
None here
Carrier IP256
0.39%
Satellite IP0
None here
Anycast IP0
None here
SSH IP21
0.03%
SMTP IP4
0.01%
DNS Resolver IP16
0.02%
Web IP271
0.41%
BitTorrent IP13
0.02%

Announced prefixes

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

18 prefixes

PREFIX	ORIGIN	COUNTRY	RPKI	PEERS	FIRST SEEN
192.51.5.0/24	AS2116GLOBALCONNECT AS	Norway	Not found	17	2026-10-02
192.51.39.0/24	AS17944Japan Weather Association	Japan	Not found	19	2026-10-02
192.51.43.0/24	AS2510FUJITSU LIMITED	Japan	Not found	17	2026-10-02
192.51.48.0/24	AS399651The Bancorp Incorporated	United States	Not found	17	2026-10-02
192.51.54.0/24	AS8220COLT Technology Services Group Limited	Japan	Not found	17	2026-10-02
192.51.55.0/24	AS10021KVH Co.,Ltd	Japan	Not found	17	2026-10-02
192.51.144.0/21	AS17511OPTAGE Inc.	Japan	Not found	17	2026-10-02
192.51.168.0/22	AS2907Research Organization of Information and Systems, National Institute of Informatics	Japan	Not found	19	2026-10-02
192.51.173.0/24	AS151257Citigroup Services and Technology (China) Limited	China	Not found	16	2026-10-02
192.51.174.0/24	AS154084Affinity Global Advertising Pvt Ltd	India	Valid	17	2026-10-02
192.51.175.0/24	AS141311Netmatix Network Private Limited	India	Valid	17	2026-10-02
192.51.188.0/24	AS205960HDTIDC LIMITED	South Korea	Valid	18	2026-10-02
192.51.192.0/23	AS21976NJEDge.Net, Inc.	United States	Valid	17	2026-10-02
192.51.194.0/23	AS2907Research Organization of Information and Systems, National Institute of Informatics	Japan	Not found	19	2026-10-02
192.51.208.0/20	AS2501The University of Tokyo	Japan	Not found	19	2026-10-02
192.51.224.0/24	AS4680Mitsubishi Electric Information Network Corporation	Japan	Not found	17	2026-10-02
192.51.240.0/24	AS36974MTN COTE D'IVOIRE S.A	Ivory Coast	Valid	18	2026-10-02
192.51.254.0/24	AS133427Selwyn District Council	New Zealand	Valid	17	2026-10-02

Every /24 inside it


192.51.0.0/24	Norway	—	0	0	0.00%
192.51.1.0/24	Norway	—	0	0	0.00%
192.51.2.0/24	Norway	—	0	0	0.00%
192.51.3.0/24	Norway	—	0	0	0.00%
192.51.4.0/24	Norway	—	0	0	0.00%
192.51.5.0/24	Norway	AS2116GLOBALCONNECT AS	2	0	0.78%
192.51.6.0/24	Norway	—	0	0	0.00%
192.51.7.0/24	Norway	—	0	0	0.00%
192.51.8.0/24	Norway	—	0	0	0.00%
192.51.9.0/24	Norway	—	0	0	0.00%
192.51.10.0/24	Norway	—	0	0	0.00%
192.51.11.0/24	Norway	—	0	0	0.00%
192.51.12.0/24	Norway	—	0	0	0.00%
192.51.13.0/24	Norway	—	0	0	0.00%
192.51.14.0/24	Norway	—	0	0	0.00%
192.51.15.0/24	Norway	—	0	0	0.00%
192.51.16.0/24	Japan	—	0	0	0.00%
192.51.17.0/24	Japan	—	0	0	0.00%
192.51.18.0/24	Japan	—	0	0	0.00%
192.51.19.0/24	Japan	—	0	0	0.00%
192.51.20.0/24	Japan	—	0	0	0.00%
192.51.21.0/24	Japan	—	0	0	0.00%
192.51.22.0/24	Japan	—	0	0	0.00%
192.51.23.0/24	Japan	—	0	0	0.00%
192.51.24.0/24	Japan	—	0	0	0.00%
192.51.25.0/24	Japan	—	0	0	0.00%
192.51.26.0/24	Japan	—	0	0	0.00%
192.51.27.0/24	Japan	—	0	0	0.00%
192.51.28.0/24	Japan	—	0	0	0.00%
192.51.29.0/24	Japan	—	0	0	0.00%
192.51.30.0/24	Japan	—	0	0	0.00%
192.51.31.0/24	Japan	—	0	0	0.00%
192.51.32.0/24	Japan	—	0	0	0.00%
192.51.33.0/24	Japan	—	0	0	0.00%
192.51.34.0/24	Japan	—	0	0	0.00%
192.51.35.0/24	Japan	—	0	0	0.00%
192.51.36.0/24	Japan	—	0	0	0.00%
192.51.37.0/24	Japan	—	0	0	0.00%
192.51.38.0/24	Japan	—	0	0	0.00%
192.51.39.0/24	Japan	AS17944Japan Weather Association	0	0	0.00%
192.51.40.0/24	Japan	—	0	0	0.00%
192.51.41.0/24	Japan	—	0	0	0.00%
192.51.42.0/24	Japan	—	0	0	0.00%
192.51.43.0/24	Japan	AS2510FUJITSU LIMITED	0	0	0.00%
192.51.44.0/24	Japan	—	0	0	0.00%
192.51.45.0/24	Japan	—	0	0	0.00%
192.51.46.0/24	Japan	—	0	0	0.00%
192.51.47.0/24	Japan	—	0	0	0.00%
192.51.48.0/24	United States	AS399651The Bancorp Incorporated	2	0	0.78%
192.51.49.0/24	Japan	—	0	0	0.00%
192.51.50.0/24	Japan	—	0	0	0.00%
192.51.51.0/24	Japan	—	0	0	0.00%
192.51.52.0/24	Japan	—	0	0	0.00%
192.51.53.0/24	Japan	—	0	0	0.00%
192.51.54.0/24	Japan	AS8220COLT Technology Services Group Limited	6	0	2.34%
192.51.55.0/24	Japan	AS10021KVH Co.,Ltd	0	0	0.00%
192.51.56.0/24	Japan	—	0	0	0.00%
192.51.57.0/24	Japan	—	0	0	0.00%
192.51.58.0/24	Japan	—	0	0	0.00%
192.51.59.0/24	Japan	—	0	0	0.00%
192.51.60.0/24	Japan	—	0	0	0.00%
192.51.61.0/24	Japan	—	0	0	0.00%
192.51.62.0/24	Japan	—	0	0	0.00%
192.51.63.0/24	Japan	—	0	0	0.00%
192.51.64.0/24	Japan	—	0	0	0.00%
192.51.65.0/24	Japan	—	0	0	0.00%
192.51.66.0/24	Japan	—	0	0	0.00%
192.51.67.0/24	Japan	—	0	0	0.00%
192.51.68.0/24	Japan	—	0	0	0.00%
192.51.69.0/24	Japan	—	0	0	0.00%
192.51.70.0/24	Japan	—	0	0	0.00%
192.51.71.0/24	Japan	—	0	0	0.00%
192.51.72.0/24	Japan	—	0	0	0.00%
192.51.73.0/24	Japan	—	0	0	0.00%
192.51.74.0/24	Japan	—	0	0	0.00%
192.51.75.0/24	Japan	—	0	0	0.00%
192.51.76.0/24	Japan	—	0	0	0.00%
192.51.77.0/24	Japan	—	0	0	0.00%
192.51.78.0/24	Japan	—	0	0	0.00%
192.51.79.0/24	Japan	—	0	0	0.00%
192.51.80.0/24	Japan	—	0	0	0.00%
192.51.81.0/24	Japan	—	0	0	0.00%
192.51.82.0/24	Japan	—	0	0	0.00%
192.51.83.0/24	Japan	—	0	0	0.00%
192.51.84.0/24	Japan	—	0	0	0.00%
192.51.85.0/24	Japan	—	0	0	0.00%
192.51.86.0/24	Japan	—	0	0	0.00%
192.51.87.0/24	Japan	—	0	0	0.00%
192.51.88.0/24	Japan	—	0	0	0.00%
192.51.89.0/24	Japan	—	0	0	0.00%
192.51.90.0/24	Japan	—	0	0	0.00%
192.51.91.0/24	Japan	—	0	0	0.00%
192.51.92.0/24	Japan	—	0	0	0.00%
192.51.93.0/24	Japan	—	0	0	0.00%
192.51.94.0/24	Japan	—	0	0	0.00%
192.51.95.0/24	Japan	—	0	0	0.00%
192.51.96.0/24	Japan	—	0	0	0.00%
192.51.97.0/24	Japan	—	0	0	0.00%
192.51.98.0/24	Japan	—	0	0	0.00%
192.51.99.0/24	Japan	—	0	0	0.00%
192.51.100.0/24	Japan	—	0	0	0.00%
192.51.101.0/24	Japan	—	0	0	0.00%
192.51.102.0/24	Japan	—	0	0	0.00%
192.51.103.0/24	Japan	—	0	0	0.00%
192.51.104.0/24	Japan	—	0	0	0.00%
192.51.105.0/24	Japan	—	0	0	0.00%
192.51.106.0/24	Japan	—	0	0	0.00%
192.51.107.0/24	Japan	—	0	0	0.00%
192.51.108.0/24	Japan	—	0	0	0.00%
192.51.109.0/24	Japan	—	0	0	0.00%
192.51.110.0/24	Japan	—	0	0	0.00%
192.51.111.0/24	Japan	—	0	0	0.00%
192.51.112.0/24	Japan	—	0	0	0.00%
192.51.113.0/24	Japan	—	0	0	0.00%
192.51.114.0/24	Japan	—	0	0	0.00%
192.51.115.0/24	Japan	—	0	0	0.00%
192.51.116.0/24	Japan	—	0	0	0.00%
192.51.117.0/24	Japan	—	0	0	0.00%
192.51.118.0/24	Japan	—	0	0	0.00%
192.51.119.0/24	Japan	—	0	0	0.00%
192.51.120.0/24	Japan	—	0	0	0.00%
192.51.121.0/24	Japan	—	0	0	0.00%
192.51.122.0/24	Japan	—	0	0	0.00%
192.51.123.0/24	Japan	—	0	0	0.00%
192.51.124.0/24	Japan	—	0	0	0.00%
192.51.125.0/24	Japan	—	0	0	0.00%
192.51.126.0/24	Japan	—	0	0	0.00%
192.51.127.0/24	Japan	—	0	0	0.00%
192.51.128.0/24	Japan	—	0	0	0.00%
192.51.129.0/24	Japan	—	0	0	0.00%
192.51.130.0/24	Japan	—	0	0	0.00%
192.51.131.0/24	Japan	—	0	0	0.00%
192.51.132.0/24	Japan	—	0	0	0.00%
192.51.133.0/24	Japan	—	0	0	0.00%
192.51.134.0/24	Japan	—	0	0	0.00%
192.51.135.0/24	Japan	—	0	0	0.00%
192.51.136.0/24	Japan	—	0	0	0.00%
192.51.137.0/24	Japan	—	0	0	0.00%
192.51.138.0/24	Japan	—	0	0	0.00%
192.51.139.0/24	Japan	—	0	0	0.00%
192.51.140.0/24	Japan	—	0	0	0.00%
192.51.141.0/24	Japan	—	0	0	0.00%
192.51.142.0/24	Japan	—	0	0	0.00%
192.51.143.0/24	Japan	—	0	0	0.00%
192.51.144.0/24	Japan	AS17511OPTAGE Inc.	0	256	100.00%
192.51.145.0/24	Japan	AS17511OPTAGE Inc.	0	0	0.00%
192.51.146.0/24	Japan	AS17511OPTAGE Inc.	2	0	0.78%
192.51.147.0/24	Japan	AS17511OPTAGE Inc.	1	0	0.39%
192.51.148.0/24	Japan	AS17511OPTAGE Inc.	0	0	0.00%
192.51.149.0/24	Japan	AS17511OPTAGE Inc.	0	0	0.00%
192.51.150.0/24	Japan	AS17511OPTAGE Inc.	0	0	0.00%
192.51.151.0/24	Japan	AS17511OPTAGE Inc.	0	0	0.00%
192.51.152.0/24	Japan	—	0	0	0.00%
192.51.153.0/24	Japan	—	0	0	0.00%
192.51.154.0/24	Japan	—	0	0	0.00%
192.51.155.0/24	Japan	—	0	0	0.00%
192.51.156.0/24	Japan	—	0	0	0.00%
192.51.157.0/24	Japan	—	0	0	0.00%
192.51.158.0/24	Japan	—	0	0	0.00%
192.51.159.0/24	Japan	—	0	0	0.00%
192.51.160.0/24	Japan	—	0	0	0.00%
192.51.161.0/24	Japan	—	0	0	0.00%
192.51.162.0/24	Japan	—	0	0	0.00%
192.51.163.0/24	Japan	—	0	0	0.00%
192.51.164.0/24	Japan	—	0	0	0.00%
192.51.165.0/24	Japan	—	0	0	0.00%
192.51.166.0/24	Japan	—	0	0	0.00%
192.51.167.0/24	Japan	—	0	0	0.00%
192.51.168.0/24	Japan	AS2907Research Organization of Information and Systems, National Institute of Informatics	1	0	0.39%
192.51.169.0/24	Japan	AS2907Research Organization of Information and Systems, National Institute of Informatics	0	0	0.00%
192.51.170.0/24	Japan	AS2907Research Organization of Information and Systems, National Institute of Informatics	0	0	0.00%
192.51.171.0/24	Japan	AS2907Research Organization of Information and Systems, National Institute of Informatics	0	0	0.00%
192.51.172.0/24	China	—	0	0	0.00%
192.51.173.0/24	China	AS151257Citigroup Services and Technology (China) Limited	0	0	0.00%
192.51.174.0/24	India	AS154084Affinity Global Advertising Pvt Ltd	0	0	0.00%
192.51.175.0/24	India	AS141311Netmatix Network Private Limited	80	0	31.25%
192.51.176.0/24	Japan	—	0	0	0.00%
192.51.177.0/24	Japan	—	0	0	0.00%
192.51.178.0/24	Japan	—	0	0	0.00%
192.51.179.0/24	Japan	—	0	0	0.00%
192.51.180.0/24	Japan	—	0	0	0.00%
192.51.181.0/24	Japan	—	0	0	0.00%
192.51.182.0/24	Japan	—	0	0	0.00%
192.51.183.0/24	Japan	—	0	0	0.00%
192.51.184.0/24	Japan	—	0	0	0.00%
192.51.185.0/24	Japan	—	0	0	0.00%
192.51.186.0/24	Japan	—	0	0	0.00%
192.51.187.0/24	Japan	—	0	0	0.00%
192.51.188.0/24	South Korea	AS205960HDTIDC LIMITED	0	256	100.00%
192.51.189.0/24	Japan	—	0	0	0.00%
192.51.190.0/24	Japan	—	0	0	0.00%
192.51.191.0/24	Japan	—	0	0	0.00%
192.51.192.0/24	United States	AS21976NJEDge.Net, Inc.	9	0	3.52%
192.51.193.0/24	United States	AS21976NJEDge.Net, Inc.	1	0	0.39%
192.51.194.0/24	Japan	AS2907Research Organization of Information and Systems, National Institute of Informatics	0	0	0.00%
192.51.195.0/24	Japan	AS2907Research Organization of Information and Systems, National Institute of Informatics	7	0	2.73%
192.51.196.0/24	Japan	—	0	0	0.00%
192.51.197.0/24	Japan	—	0	0	0.00%
192.51.198.0/24	Japan	—	0	0	0.00%
192.51.199.0/24	Japan	—	0	0	0.00%
192.51.200.0/24	Japan	—	0	0	0.00%
192.51.201.0/24	Japan	—	0	0	0.00%
192.51.202.0/24	Japan	—	0	0	0.00%
192.51.203.0/24	Japan	—	0	0	0.00%
192.51.204.0/24	Japan	—	0	0	0.00%
192.51.205.0/24	Japan	—	0	0	0.00%
192.51.206.0/24	Japan	—	0	0	0.00%
192.51.207.0/24	Japan	—	0	0	0.00%
192.51.208.0/24	Japan	AS2501The University of Tokyo	0	0	0.00%
192.51.209.0/24	Japan	AS2501The University of Tokyo	0	0	0.00%
192.51.210.0/24	Japan	AS2501The University of Tokyo	0	0	0.00%
192.51.211.0/24	Japan	AS2501The University of Tokyo	0	0	0.00%
192.51.212.0/24	Japan	AS2501The University of Tokyo	0	0	0.00%
192.51.213.0/24	Japan	AS2501The University of Tokyo	0	0	0.00%
192.51.214.0/24	Japan	AS2501The University of Tokyo	0	0	0.00%
192.51.215.0/24	Japan	AS2501The University of Tokyo	0	0	0.00%
192.51.216.0/24	Japan	AS2501The University of Tokyo	0	0	0.00%
192.51.217.0/24	Japan	AS2501The University of Tokyo	0	0	0.00%
192.51.218.0/24	Japan	AS2501The University of Tokyo	0	0	0.00%
192.51.219.0/24	Japan	AS2501The University of Tokyo	0	0	0.00%
192.51.220.0/24	Japan	AS2501The University of Tokyo	0	0	0.00%
192.51.221.0/24	Japan	AS2501The University of Tokyo	0	0	0.00%
192.51.222.0/24	Japan	AS2501The University of Tokyo	6	0	2.34%
192.51.223.0/24	Japan	AS2501The University of Tokyo	0	0	0.00%
192.51.224.0/24	Japan	AS4680Mitsubishi Electric Information Network Corporation	0	0	0.00%
192.51.225.0/24	Japan	—	0	0	0.00%
192.51.226.0/24	Japan	—	0	0	0.00%
192.51.227.0/24	Japan	—	0	0	0.00%
192.51.228.0/24	Japan	—	0	0	0.00%
192.51.229.0/24	Japan	—	0	0	0.00%
192.51.230.0/24	Japan	—	0	0	0.00%
192.51.231.0/24	Japan	—	0	0	0.00%
192.51.232.0/24	Japan	—	0	0	0.00%
192.51.233.0/24	Japan	—	0	0	0.00%
192.51.234.0/24	Japan	—	0	0	0.00%
192.51.235.0/24	Japan	—	0	0	0.00%
192.51.236.0/24	Japan	—	0	0	0.00%
192.51.237.0/24	Japan	—	0	0	0.00%
192.51.238.0/24	Japan	—	0	0	0.00%
192.51.239.0/24	Japan	—	0	0	0.00%
192.51.240.0/24	Ivory Coast	AS36974MTN COTE D'IVOIRE S.A	0	0	0.00%
192.51.241.0/24	Japan	—	0	0	0.00%
192.51.242.0/24	Japan	—	0	0	0.00%
192.51.243.0/24	Japan	—	0	0	0.00%
192.51.244.0/24	Japan	—	0	0	0.00%
192.51.245.0/24	Japan	—	0	0	0.00%
192.51.246.0/24	Japan	—	0	0	0.00%
192.51.247.0/24	Japan	—	0	0	0.00%
192.51.248.0/24	Japan	—	0	0	0.00%
192.51.249.0/24	Japan	—	0	0	0.00%
192.51.250.0/24	Japan	—	0	0	0.00%
192.51.251.0/24	Japan	—	0	0	0.00%
192.51.252.0/24	Australia	—	0	0	0.00%
192.51.253.0/24	Japan	—	0	0	0.00%
192.51.254.0/24	New Zealand	AS133427Selwyn District Council	1	0	0.39%
192.51.255.0/24	Japan	—	0	0	0.00%

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