Spoofing Information for AS 5610 (O2-CZECH-REPUBLIC)
Spoofing status per IP block for last year of data
(Results for all dates also available.)| Spoof status key | ||||
|---|---|---|---|---|
| received | Spoofed packet was received. | ✔ | Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it. | |
| rewritten | Spoofed packet was received, but the source address was changed en route. | |||
| blocked | Spoofed packet was not received, but unspoofed packet was. | |||
| unknown | Neither spoofed nor unspoofed packet was received. | |||
| IP block | Latest test | Spoof Private | Spoof Routable | ||
|---|---|---|---|---|---|
| 80.188.15.x/24 | 2025-08-07 07:17:02 GMT | blocked | blocked | ||
| 88.101.117.x/24 | 2025-04-01 22:40:21 GMT | rewritten | rewritten | ||
| 90.177.53.x/24 | 2025-10-25 17:33:07 GMT | rewritten | rewritten | ||
| 2a00:102b:40xx::/40 | 2025-12-17 16:25:12 GMT | blocked | blocked | ||
| 2a00:102b:50xx::/40 | 2025-12-15 16:08:46 GMT | blocked | blocked | ||
Address Space Announcement History
The customer cone for 5610 is too large for a prefix list to be useful.