209.51.0.0/16
56 assigned ranges in this /16.
/24 breakdown
| Block | Top country | Countries | ASNs | Ranges |
|---|---|---|---|---|
| 209.51.0.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.4.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.8.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.16.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.17.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.19.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.22.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.28.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.32.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.39.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.40.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.51.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.61.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.65.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.72.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.73.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.80.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.81.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.83.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.92.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.93.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.94.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.96.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.100.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.104.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.128.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.129.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.133.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.134.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.135.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.137.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.139.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.140.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.144.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.145.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.151.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.153.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.157.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.160.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.167.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.168.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.170.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.171.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.177.0/24 | Puerto Rico (100%) | 1 | 1 | 1 |
| 209.51.178.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.182.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.183.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.185.0/24 | Costa Rica (100%) | 1 | 1 | 1 |
| 209.51.186.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.187.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.188.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.189.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.190.0/24 | United States (100%) | 1 | 2 | 2 |
| 209.51.192.0/24 | United States (100%) | 1 | 1 | 1 |
| 209.51.224.0/24 | United States (100%) | 1 | 1 | 1 |
Assigned ranges
| Range | ASN | Org | Country |
|---|---|---|---|
209.51.0.0 – 209.51.3.255 | AS399660 | WWLTH Inc | US |
209.51.4.0 – 209.51.7.255 | AS63178 | Mid-Plains Rural Telephone Cooperative Inc. | US |
209.51.8.0 – 209.51.15.255 | AS32212 | Sky Fiber Internet | US |
209.51.16.0 – 209.51.16.255 | AS396940 | HTH | US |
209.51.17.0 – 209.51.17.255 | AS396936 | HTH | US |
209.51.19.0 – 209.51.19.255 | AS396936 | HTH | US |
209.51.22.0 – 209.51.22.255 | AS396936 | HTH | US |
209.51.28.0 – 209.51.28.255 | AS396940 | HTH | US |
209.51.32.0 – 209.51.33.255 | AS54651 | Black Duck Software Inc. | US |
209.51.39.0 – 209.51.39.255 | AS16509 | Amazon.com Inc. | US |
209.51.40.0 – 209.51.47.255 | AS27501 | isp.net | US |
209.51.51.0 – 209.51.51.255 | AS11690 | Cognizant | US |
209.51.61.0 – 209.51.61.255 | AS11690 | Cognizant | US |
209.51.65.0 – 209.51.71.255 | AS395597 | Apogee Telecom Inc. | US |
209.51.72.0 – 209.51.72.255 | AS22773 | Cox Communications Inc. | US |
41 more ranges in this block.