AS43037 Seznam.cz A.S.
IP Address Ranges
| Netblock | From IP | To IP | Number of IPs | |
|---|---|---|---|---|
| 77.75.72.0/23 | 77.75.72.0 | 77.75.73.255 | 512 | |
| 77.75.74.0/24 | 77.75.74.0 | 77.75.74.255 | 256 | |
| 77.75.75.0/24 | 77.75.75.0 | 77.75.75.255 | 256 | |
| 77.75.76.0/23 | 77.75.76.0 | 77.75.77.255 | 512 | |
| 77.75.78.0/23 | 77.75.78.0 | 77.75.79.255 | 512 | |
| 185.66.188.0/22 | 185.66.188.0 | 185.66.191.255 | 1,024 |
| Netblock | From IP | To IP | Number of IPs | |
|---|---|---|---|---|
| 2a02:598::/47 | 2a02:598:: | 2a02:598:1:ffff:ffff:ffff:ffff:ffff | 2.42 Septillion | |
| 2a02:598:2::/48 | 2a02:598:2:: | 2a02:598:2:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2a02:598:3::/48 | 2a02:598:3:: | 2a02:598:3:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2a02:598:4::/46 | 2a02:598:4:: | 2a02:598:7:ffff:ffff:ffff:ffff:ffff | 4.84 Septillion | |
| 2a02:598:8::/47 | 2a02:598:8:: | 2a02:598:9:ffff:ffff:ffff:ffff:ffff | 2.42 Septillion | |
| 2a02:598:a::/48 | 2a02:598:a:: | 2a02:598:a:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2a02:598:b::/48 | 2a02:598:b:: | 2a02:598:b:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2a02:598:c::/46 | 2a02:598:c:: | 2a02:598:f:ffff:ffff:ffff:ffff:ffff | 4.84 Septillion | |
| 2a02:598:10::/44 | 2a02:598:10:: | 2a02:598:1f:ffff:ffff:ffff:ffff:ffff | 19.34 Septillion | |
| 2a02:598:20::/43 | 2a02:598:20:: | 2a02:598:3f:ffff:ffff:ffff:ffff:ffff | 38.69 Septillion | |
| 2a02:598:40::/42 | 2a02:598:40:: | 2a02:598:7f:ffff:ffff:ffff:ffff:ffff | 77.37 Septillion | |
| 2a02:598:80::/41 | 2a02:598:80:: | 2a02:598:ff:ffff:ffff:ffff:ffff:ffff | 154.74 Septillion | |
| 2a02:598:100::/40 | 2a02:598:100:: | 2a02:598:1ff:ffff:ffff:ffff:ffff:ffff | 309.49 Septillion | |
| 2a02:598:200::/39 | 2a02:598:200:: | 2a02:598:3ff:ffff:ffff:ffff:ffff:ffff | 618.97 Septillion | |
| 2a02:598:400::/38 | 2a02:598:400:: | 2a02:598:7ff:ffff:ffff:ffff:ffff:ffff | 1.24 Octillion | |
| 2a02:598:800::/37 | 2a02:598:800:: | 2a02:598:fff:ffff:ffff:ffff:ffff:ffff | 2.48 Octillion | |
| 2a02:598:1000::/36 | 2a02:598:1000:: | 2a02:598:1fff:ffff:ffff:ffff:ffff:ffff | 4.95 Octillion | |
| 2a02:598:2000::/36 | 2a02:598:2000:: | 2a02:598:2fff:ffff:ffff:ffff:ffff:ffff | 4.95 Octillion | |
| 2a02:598:3000::/39 | 2a02:598:3000:: | 2a02:598:31ff:ffff:ffff:ffff:ffff:ffff | 618.97 Septillion | |
| 2a02:598:3200::/40 | 2a02:598:3200:: | 2a02:598:32ff:ffff:ffff:ffff:ffff:ffff | 309.49 Septillion | |
| 2a02:598:3300::/43 | 2a02:598:3300:: | 2a02:598:331f:ffff:ffff:ffff:ffff:ffff | 38.69 Septillion | |
| 2a02:598:3320::/44 | 2a02:598:3320:: | 2a02:598:332f:ffff:ffff:ffff:ffff:ffff | 19.34 Septillion | |
| 2a02:598:3330::/47 | 2a02:598:3330:: | 2a02:598:3331:ffff:ffff:ffff:ffff:ffff | 2.42 Septillion | |
| 2a02:598:3332::/48 | 2a02:598:3332:: | 2a02:598:3332:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2a02:598:3333::/48 | 2a02:598:3333:: | 2a02:598:3333:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2a02:598:3334::/46 | 2a02:598:3334:: | 2a02:598:3337:ffff:ffff:ffff:ffff:ffff | 4.84 Septillion | |
| 2a02:598:3338::/45 | 2a02:598:3338:: | 2a02:598:333f:ffff:ffff:ffff:ffff:ffff | 9.67 Septillion | |
| 2a02:598:3340::/42 | 2a02:598:3340:: | 2a02:598:337f:ffff:ffff:ffff:ffff:ffff | 77.37 Septillion | |
| 2a02:598:3380::/41 | 2a02:598:3380:: | 2a02:598:33ff:ffff:ffff:ffff:ffff:ffff | 154.74 Septillion | |
| 2a02:598:3400::/38 | 2a02:598:3400:: | 2a02:598:37ff:ffff:ffff:ffff:ffff:ffff | 1.24 Octillion | |
| 2a02:598:3800::/37 | 2a02:598:3800:: | 2a02:598:3fff:ffff:ffff:ffff:ffff:ffff | 2.48 Octillion | |
| 2a02:598:4000::/38 | 2a02:598:4000:: | 2a02:598:43ff:ffff:ffff:ffff:ffff:ffff | 1.24 Octillion | |
| 2a02:598:4400::/42 | 2a02:598:4400:: | 2a02:598:443f:ffff:ffff:ffff:ffff:ffff | 77.37 Septillion | |
| 2a02:598:4440::/46 | 2a02:598:4440:: | 2a02:598:4443:ffff:ffff:ffff:ffff:ffff | 4.84 Septillion | |
| 2a02:598:4444::/48 | 2a02:598:4444:: | 2a02:598:4444:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2a02:598:4445::/48 | 2a02:598:4445:: | 2a02:598:4445:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2a02:598:4446::/47 | 2a02:598:4446:: | 2a02:598:4447:ffff:ffff:ffff:ffff:ffff | 2.42 Septillion | |
| 2a02:598:4448::/45 | 2a02:598:4448:: | 2a02:598:444f:ffff:ffff:ffff:ffff:ffff | 9.67 Septillion | |
| 2a02:598:4450::/44 | 2a02:598:4450:: | 2a02:598:445f:ffff:ffff:ffff:ffff:ffff | 19.34 Septillion | |
| 2a02:598:4460::/43 | 2a02:598:4460:: | 2a02:598:447f:ffff:ffff:ffff:ffff:ffff | 38.69 Septillion | |
| 2a02:598:4480::/41 | 2a02:598:4480:: | 2a02:598:44ff:ffff:ffff:ffff:ffff:ffff | 154.74 Septillion | |
| 2a02:598:4500::/40 | 2a02:598:4500:: | 2a02:598:45ff:ffff:ffff:ffff:ffff:ffff | 309.49 Septillion | |
| 2a02:598:4600::/39 | 2a02:598:4600:: | 2a02:598:47ff:ffff:ffff:ffff:ffff:ffff | 618.97 Septillion | |
| 2a02:598:4800::/37 | 2a02:598:4800:: | 2a02:598:4fff:ffff:ffff:ffff:ffff:ffff | 2.48 Octillion | |
| 2a02:598:5000::/36 | 2a02:598:5000:: | 2a02:598:5fff:ffff:ffff:ffff:ffff:ffff | 4.95 Octillion | |
| 2a02:598:6000::/35 | 2a02:598:6000:: | 2a02:598:7fff:ffff:ffff:ffff:ffff:ffff | 9.90 Octillion | |
| 2a02:598:8000::/33 | 2a02:598:8000:: | 2a02:598:ffff:ffff:ffff:ffff:ffff:ffff | 39.61 Octillion |
Downstreams
What is an Autonomous System (AS)?
An Autonomous System (AS) is a collection of connected networks that operate under a common administrative domain and share routing policies. Each AS is identified by a unique Autonomous System Number (ASN), which is used to exchange routing information with other ASs. AS can control how traffic flows through networks and then filter out unwanted traffic.
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