Spoofing Information for AS 2856 (BT-UK-AS)
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 | ||
|---|---|---|---|---|---|
| 86.156.252.x/24 | 2025-03-27 22:37:40 GMT | rewritten | rewritten | ||
| 2a00:23c8:5dxx::/40 | 2025-03-27 22:37:40 GMT | blocked | blocked | ||
| 81.138.4.x/24 | 2025-03-26 18:10:40 GMT | rewritten | rewritten | ||
| 109.149.255.x/24 | 2025-03-20 21:30:00 GMT | rewritten | rewritten | ||
| 86.129.18.x/24 | 2025-03-06 19:14:31 GMT | rewritten | rewritten | ||
| 81.155.166.x/24 | 2025-02-27 18:06:50 GMT | rewritten | rewritten | ||
| 81.157.75.x/24 | 2025-02-20 16:59:07 GMT | rewritten | rewritten | ||
| 51.14.70.x/24 | 2025-02-12 01:59:39 GMT | rewritten | rewritten | ||
| 81.135.227.x/24 | 2025-02-06 07:24:50 GMT | rewritten | rewritten | ||
| 86.131.121.x/24 | 2025-01-30 06:17:06 GMT | rewritten | rewritten | ||
| 81.129.59.x/24 | 2025-01-23 05:09:27 GMT | rewritten | rewritten | ||
| 86.173.215.x/24 | 2025-01-16 04:02:17 GMT | rewritten | rewritten | ||
| 86.170.85.x/24 | 2025-01-09 02:55:29 GMT | rewritten | rewritten | ||
| 86.155.1.x/24 | 2025-01-07 19:25:03 GMT | rewritten | rewritten | ||
| 2a00:23c8:96xx::/40 | 2025-01-07 19:25:03 GMT | blocked | blocked | ||
| 109.147.123.x/24 | 2025-01-02 01:48:46 GMT | rewritten | rewritten | ||
| 81.158.78.x/24 | 2024-12-25 10:36:17 GMT | rewritten | rewritten | ||
| 31.94.19.x/24 | 2024-12-22 16:31:07 GMT | rewritten | rewritten | ||
| 86.133.151.x/24 | 2024-12-18 09:29:24 GMT | rewritten | rewritten | ||
| 86.131.148.x/24 | 2024-11-27 01:01:45 GMT | rewritten | rewritten | ||
| 86.161.40.x/24 | 2024-11-19 23:54:56 GMT | rewritten | rewritten | ||
| 109.145.204.x/24 | 2024-11-12 22:48:09 GMT | rewritten | rewritten | ||
| 86.141.198.x/24 | 2024-10-31 17:49:52 GMT | rewritten | rewritten | ||
| 86.130.52.x/24 | 2024-10-24 16:43:08 GMT | rewritten | rewritten | ||
| 86.140.77.x/24 | 2024-10-20 14:53:18 GMT | rewritten | rewritten | ||
| 86.133.131.x/24 | 2024-10-14 01:05:27 GMT | rewritten | rewritten | ||
| 86.142.244.x/24 | 2024-09-29 10:26:36 GMT | rewritten | rewritten | ||
| 86.155.77.x/24 | 2024-09-14 22:02:42 GMT | rewritten | rewritten | ||
| 109.151.88.x/24 | 2024-08-17 16:26:17 GMT | rewritten | rewritten | ||
| 31.54.255.x/24 | 2024-08-15 23:51:38 GMT | rewritten | rewritten | ||
| 81.145.206.x/24 | 2024-07-31 08:56:25 GMT | blocked | received | ||
| 109.147.177.x/24 | 2024-07-25 20:30:23 GMT | rewritten | rewritten | ||
| 31.94.56.x/24 | 2024-07-15 12:54:25 GMT | rewritten | rewritten | ||
| 31.94.66.x/24 | 2024-07-11 22:46:55 GMT | rewritten | rewritten | ||
| 31.94.14.x/24 | 2024-07-11 20:45:18 GMT | rewritten | rewritten | ||
| 86.136.44.x/24 | 2024-07-07 19:12:35 GMT | rewritten | rewritten | ||
| 81.154.126.x/24 | 2024-06-23 04:38:50 GMT | rewritten | rewritten | ||
| 109.155.31.x/24 | 2024-06-16 03:31:55 GMT | rewritten | rewritten | ||
| 86.148.43.x/24 | 2024-06-02 22:05:37 GMT | rewritten | rewritten | ||
| 31.94.38.x/24 | 2024-06-01 12:00:05 GMT | rewritten | rewritten | ||
| 81.144.242.x/24 | 2024-04-29 09:29:08 GMT | blocked | blocked | ||
| 81.129.71.x/24 | 2024-04-09 19:51:37 GMT | rewritten | rewritten | ||
Address Space Announcement History
The customer cone for 2856 is too large for a prefix list to be useful.