65,536 routable31 ASes
/16 subnet
209.51.0.0/16
Where this subnet is, who announces it, and what our databases hold in it. Below, every /24 inside it; open one for its addresses.
65,536
routable addresses
65,536
geolocated
8
countries
31
announcing ASes
82
announced prefixes
461
anonymous addresses
Where it is
Addresses IP Geolocation places in each country, as a share of those it places.
- United States64,920 · 99.06%
- Puerto Rico512 · 0.78%
- Israel32 · 0.05%
- United Kingdom24 · 0.04%
- Colombia16 · 0.02%
- India16 · 0.02%
- Bangladesh8 · 0.01%
- South Africa8 · 0.01%
Who announces it
Each /24 counted for the AS announcing most of it, as a share of the routable addresses.
- AS16509Amazon.com, Inc.8,448 · 12.89%
- AS10297eNET Inc.8,192 · 12.50%
- AS6939Hurricane Electric LLC6,400 · 9.77%
- AS11042NETWORK TRANSIT HOLDINGS LLC4,608 · 7.03%
- AS395597Apogee Telecom Inc.3,584 · 5.47%
- AS27501isp.net2,048 · 3.13%
- AS32212Sky Fiber Internet2,048 · 3.13%
- AS13649Flexential Colorado Corp.1,024 · 1.56%
- AS63178Mid-Plains Rural Telephone Cooperative, Inc.1,024 · 1.56%
- AS399660WWLTH, Inc1,024 · 1.56%
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 IP2320.35%
- 0.35%
- None here
- None here
- None here
- 0.00%
- None here
- Hosting IP19,95730.45%
- None here
- None here
- None here
- None here
- SSH IP5480.84%
- SMTP IP960.15%
- 0.18%
- Web IP9011.37%
- 0.02%
Announced prefixes
Every prefix inside this block that BGP Route saw announced, with its origin and RPKI status.
| PREFIX | ORIGIN | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|---|
| 209.51.0.0/22 | AS399660WWLTH, Inc | United States | Valid | 17 | 2026-10-02 |
| 209.51.4.0/22 | AS63178Mid-Plains Rural Telephone Cooperative, Inc. | United States | Valid | 17 | 2026-10-02 |
| 209.51.4.0/24 | AS63178Mid-Plains Rural Telephone Cooperative, Inc. | United States | Valid | 17 | 2026-10-02 |
| 209.51.5.0/24 | AS63178Mid-Plains Rural Telephone Cooperative, Inc. | United States | Valid | 17 | 2026-10-02 |
| 209.51.6.0/24 | AS63178Mid-Plains Rural Telephone Cooperative, Inc. | United States | Valid | 17 | 2026-10-02 |
| 209.51.7.0/24 | AS63178Mid-Plains Rural Telephone Cooperative, Inc. | United States | Valid | 17 | 2026-10-02 |
| 209.51.8.0/21 | AS32212Sky Fiber Internet | United States | Valid | 17 | 2026-10-02 |
| 209.51.8.0/24 | AS32212Sky Fiber Internet | United States | Valid | 17 | 2026-10-02 |
| 209.51.9.0/24 | AS32212Sky Fiber Internet | United States | Valid | 17 | 2026-10-02 |
| 209.51.10.0/24 | AS32212Sky Fiber Internet | United States | Valid | 17 | 2026-10-02 |
| 209.51.11.0/24 | AS32212Sky Fiber Internet | United States | Valid | 17 | 2026-10-02 |
| 209.51.12.0/24 | AS32212Sky Fiber Internet | United States | Valid | 17 | 2026-10-02 |
| 209.51.13.0/24 | AS32212Sky Fiber Internet | United States | Valid | 17 | 2026-10-02 |
| 209.51.14.0/24 | AS32212Sky Fiber Internet | United States | Valid | 17 | 2026-10-02 |
| 209.51.15.0/24 | AS32212Sky Fiber Internet | United States | Valid | 17 | 2026-10-02 |
| 209.51.16.0/24 | AS396940HTH | United States | Not found | 17 | 2026-10-02 |
| 209.51.17.0/24 | AS396936HTH | United States | Not found | 17 | 2026-10-02 |
| 209.51.19.0/24 | AS396936HTH | United States | Not found | 17 | 2026-10-02 |
| 209.51.22.0/24 | AS396936HTH | United States | Not found | 17 | 2026-10-02 |
| 209.51.28.0/24 | AS396940HTH | United States | Not found | 17 | 2026-10-02 |
| 209.51.32.0/23 | AS54651Black Duck Software, Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.32.0/24 | AS54651Black Duck Software, Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.39.0/24 | AS16509Amazon.com, Inc. | United States | Valid | 17 | 2026-10-02 |
| 209.51.40.0/21 | AS27501isp.net | United States | Valid | 18 | 2026-10-02 |
| 209.51.51.0/24 | AS11690Cognizant | United States | Not found | 17 | 2026-10-02 |
| 209.51.61.0/24 | AS11690Cognizant | United States | Not found | 17 | 2026-10-02 |
| 209.51.65.0/24 | AS395597Apogee Telecom Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.66.0/24 | AS395597Apogee Telecom Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.67.0/24 | AS395597Apogee Telecom Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.68.0/24 | AS395597Apogee Telecom Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.69.0/24 | AS395597Apogee Telecom Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.70.0/24 | AS395597Apogee Telecom Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.71.0/24 | AS395597Apogee Telecom Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.72.0/24 | AS22773Cox Communications Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.73.0/24 | AS395597Apogee Telecom Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.74.0/24 | AS395597Apogee Telecom Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.75.0/24 | AS395597Apogee Telecom Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.76.0/24 | AS395597Apogee Telecom Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.77.0/24 | AS395597Apogee Telecom Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.80.0/24 | AS20115Charter Communications LLC | United States | Not found | 18 | 2026-10-02 |
| 209.51.81.0/24 | AS33491Comcast Cable Communications, LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.83.0/24 | AS395597Apogee Telecom Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.92.0/24 | AS395597Apogee Telecom Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.93.0/24 | AS46887Zayo Bandwidth | United States | Not found | 17 | 2026-10-02 |
| 209.51.94.0/24 | AS174Cogent Communications, LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.96.0/24 | AS13649Flexential Colorado Corp. | United States | Not found | 17 | 2026-10-02 |
| 209.51.97.0/24 | AS13649Flexential Colorado Corp. | United States | Not found | 17 | 2026-10-02 |
| 209.51.98.0/23 | AS13649Flexential Colorado Corp. | United States | Not found | 17 | 2026-10-02 |
| 209.51.98.0/24 | AS13649Flexential Colorado Corp. | United States | Not found | 17 | 2026-10-02 |
| 209.51.99.0/24 | AS13649Flexential Colorado Corp. | United States | Not found | 17 | 2026-10-02 |
| 209.51.100.0/24 | AS8075Microsoft Corporation | United States | Valid | 17 | 2026-10-02 |
| 209.51.104.0/24 | AS14618Amazon.com, Inc. | United States | Valid | 18 | 2026-10-02 |
| 209.51.128.0/24 | AS13472Matrix Medical Network | United States | Valid | 17 | 2026-10-02 |
| 209.51.129.0/24 | AS11042NETWORK TRANSIT HOLDINGS LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.130.0/23 | AS11042NETWORK TRANSIT HOLDINGS LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.133.0/24 | AS11042NETWORK TRANSIT HOLDINGS LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.134.0/24 | AS13472Matrix Medical Network | United States | Valid | 17 | 2026-10-02 |
| 209.51.135.0/24 | AS11042NETWORK TRANSIT HOLDINGS LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.137.0/24 | AS11042NETWORK TRANSIT HOLDINGS LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.138.0/24 | AS11042NETWORK TRANSIT HOLDINGS LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.139.0/24 | AS7226Latisys-Denver, LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.140.0/22 | AS11042NETWORK TRANSIT HOLDINGS LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.144.0/24 | AS7226Latisys-Denver, LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.145.0/24 | AS11042NETWORK TRANSIT HOLDINGS LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.146.0/24 | AS11042NETWORK TRANSIT HOLDINGS LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.151.0/24 | AS5650Verizon Business | United States | Valid | 17 | 2026-10-02 |
| 209.51.153.0/24 | AS11042NETWORK TRANSIT HOLDINGS LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.154.0/23 | AS11042NETWORK TRANSIT HOLDINGS LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.157.0/24 | AS11042NETWORK TRANSIT HOLDINGS LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.158.0/24 | AS11042NETWORK TRANSIT HOLDINGS LLC | United States | Not found | 17 | 2026-10-02 |
| 209.51.160.0/19 | AS6939Hurricane Electric LLC | United States | Valid | 18 | 2026-10-02 |
| 209.51.167.0/24 | AS18821Iosocket LLC | United States | Valid | 18 | 2026-10-02 |
| 209.51.170.0/24 | AS39499647-2339071 | United States | Valid | 17 | 2026-10-02 |
| 209.51.177.0/24 | AS14979Aeronet Wireless | Puerto Rico | Valid | 18 | 2026-10-02 |
| 209.51.182.0/24 | AS398885Aerwave, Inc. | United States | Valid | 18 | 2026-10-02 |
| 209.51.185.0/24 | AS28317NAVEGALO S.A. | United States | Valid | 17 | 2026-10-02 |
| 209.51.187.0/24 | AS398576Premium Choice Broadband | United States | Valid | 18 | 2026-10-02 |
| 209.51.188.0/24 | AS22989Free Software Foundation, Inc. | United States | Valid | 17 | 2026-10-02 |
| 209.51.192.0/19 | AS10297eNET Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.200.0/24 | AS10297eNET Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.201.0/24 | AS10297eNET Inc. | United States | Not found | 17 | 2026-10-02 |
| 209.51.224.0/19 | AS16509Amazon.com, Inc. | United States | Valid | 17 | 2026-10-02 |
Every /24 inside it
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.