Spoofing Information for AS 4538 (ERX-CERNET-BKB)
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 | ||
|---|---|---|---|---|---|
| 42.247.108.x/24 | 2025-09-12 07:17:26 GMT | blocked | blocked | ||
| 58.199.65.x/24 | 2025-06-06 01:57:14 GMT | blocked | blocked | ||
| 58.206.196.x/24 | 2025-07-14 10:22:09 GMT | blocked | received | ||
| 58.206.197.x/24 | 2025-06-12 01:16:37 GMT | blocked | received | ||
| 58.206.198.x/24 | 2025-07-31 01:15:37 GMT | blocked | received | ||
| 58.206.199.x/24 | 2025-07-07 01:18:22 GMT | blocked | received | ||
| 58.206.200.x/24 | 2025-12-25 11:09:13 GMT | blocked | received | ||
| 58.206.201.x/24 | 2026-01-07 06:56:28 GMT | blocked | received | ||
| 58.206.202.x/24 | 2026-02-14 06:45:12 GMT | blocked | received | ||
| 58.206.203.x/24 | 2026-01-06 08:11:57 GMT | blocked | received | ||
| 58.206.204.x/24 | 2026-02-09 11:01:25 GMT | blocked | received | ||
| 58.206.205.x/24 | 2025-11-24 01:10:41 GMT | blocked | received | ||
| 58.206.206.x/24 | 2025-10-23 03:19:41 GMT | blocked | received | ||
| 58.206.207.x/24 | 2026-02-02 09:53:56 GMT | blocked | received | ||
| 58.206.238.x/24 | 2025-04-14 02:59:57 GMT | blocked | blocked | ||
| 202.112.237.x/24 | 2026-02-18 04:48:17 GMT | received | received | ||
| 202.120.234.x/24 | 2026-02-11 11:49:33 GMT | rewritten | rewritten | ||
| 219.246.97.x/24 | 2025-11-20 01:51:00 GMT | rewritten | rewritten | ||
| 222.23.81.x/24 | 2025-09-23 00:53:13 GMT | blocked | blocked | ||
| 2001:250:2xx::/40 | 2026-01-06 04:21:11 GMT | blocked | blocked | ||
Address Space Announcement History
The customer cone for 4538 is too large for a prefix list to be useful.