| 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 | ||
|---|---|---|---|---|---|
| 38.25.128.x/24 | 2026-09-06 23:25:57 GMT | ✔ | blocked | ✔ | blocked |
| 38.25.130.x/24 | 2025-12-03 13:58:26 GMT | blocked | blocked | ||
| 38.25.132.x/24 | 2026-04-09 21:09:35 GMT | rewritten | received | ||
| 38.25.133.x/24 | 2025-07-15 21:43:30 GMT | rewritten | rewritten | ||
| 38.25.136.x/24 | 2025-06-06 17:09:02 GMT | blocked | received | ||
| 38.25.138.x/24 | 2026-04-06 23:42:39 GMT | blocked | blocked | ||
| 38.25.139.x/24 | 2025-04-07 23:16:22 GMT | rewritten | rewritten | ||
| 38.25.140.x/24 | 2026-05-26 13:14:46 GMT | blocked | blocked | ||
| 38.25.141.x/24 | 2025-05-08 21:02:19 GMT | rewritten | rewritten | ||
| 38.25.144.x/24 | 2026-05-11 12:28:32 GMT | rewritten | rewritten | ||
| 38.25.145.x/24 | 2025-11-11 12:19:07 GMT | blocked | blocked | ||
| 38.25.146.x/24 | 2025-07-29 22:03:14 GMT | rewritten | rewritten | ||
| 38.25.147.x/24 | 2026-05-11 14:00:55 GMT | blocked | blocked | ||
| 38.25.148.x/24 | 2023-06-01 12:59:01 GMT | rewritten | received | ||
| 38.25.150.x/24 | 2026-03-19 21:49:20 GMT | rewritten | rewritten | ||
| 38.25.153.x/24 | 2026-05-06 13:13:40 GMT | rewritten | received | ||
| 38.25.154.x/24 | 2025-10-24 13:42:36 GMT | blocked | received | ||
| 38.25.157.x/24 | 2025-07-26 18:48:56 GMT | rewritten | rewritten | ||
| 38.25.159.x/24 | 2025-05-02 12:03:02 GMT | rewritten | received | ||
| 38.25.166.x/24 | 2026-05-13 21:34:08 GMT | rewritten | rewritten | ||
| 38.25.169.x/24 | 2023-05-25 23:50:38 GMT | rewritten | received | ||
| 38.25.171.x/24 | 2024-06-17 12:35:42 GMT | blocked | blocked | ||
| 38.25.173.x/24 | 2026-06-12 16:58:19 GMT | blocked | blocked | ||
| 38.25.175.x/24 | 2026-06-10 13:07:07 GMT | rewritten | rewritten | ||
| 38.25.178.x/24 | 2025-04-19 16:25:20 GMT | rewritten | rewritten | ||
| 38.25.179.x/24 | 2025-06-17 18:14:12 GMT | rewritten | rewritten | ||
| 38.25.181.x/24 | 2026-06-16 12:46:53 GMT | blocked | blocked | ||
| 38.25.183.x/24 | 2025-12-01 21:36:00 GMT | rewritten | rewritten | ||
| 38.25.184.x/24 | 2026-02-16 16:20:58 GMT | blocked | blocked | ||
| 38.25.185.x/24 | 2026-05-07 17:56:41 GMT | rewritten | rewritten | ||
| 38.25.186.x/24 | 2026-06-22 19:49:38 GMT | blocked | blocked | ||
| 38.25.188.x/24 | 2025-05-14 00:45:46 GMT | rewritten | rewritten | ||
| 38.25.192.x/24 | 2025-04-13 22:14:52 GMT | rewritten | rewritten | ||
| 38.25.193.x/24 | 2023-06-13 20:30:24 GMT | rewritten | received | ||
| 38.25.196.x/24 | 2025-04-12 22:38:40 GMT | rewritten | rewritten | ||
| 38.25.197.x/24 | 2026-05-04 17:19:37 GMT | rewritten | rewritten | ||
| 38.25.198.x/24 | 2025-12-09 12:41:34 GMT | blocked | blocked | ||
| 38.25.199.x/24 | 2025-07-01 21:25:19 GMT | rewritten | rewritten | ||
| 38.25.201.x/24 | 2025-07-11 09:08:18 GMT | rewritten | rewritten | ||
| 38.25.204.x/24 | 2025-11-26 21:10:10 GMT | rewritten | rewritten | ||
| 38.25.206.x/24 | 2025-09-25 21:36:15 GMT | rewritten | rewritten | ||
| 38.25.207.x/24 | 2026-09-07 19:00:39 GMT | blocked | blocked | ||
| 38.25.208.x/24 | 2026-07-06 13:34:11 GMT | blocked | blocked | ||
| 38.25.210.x/24 | 2025-04-12 21:28:06 GMT | rewritten | rewritten | ||
| 38.25.213.x/24 | 2025-04-14 22:17:36 GMT | rewritten | received | ||
| 38.25.215.x/24 | 2025-04-22 00:33:23 GMT | rewritten | rewritten | ||
| 38.25.216.x/24 | 2026-06-03 15:12:04 GMT | rewritten | rewritten | ||
| 38.25.218.x/24 | 2026-04-10 21:22:37 GMT | rewritten | rewritten | ||
| 38.25.219.x/24 | 2026-04-30 12:18:59 GMT | rewritten | rewritten | ||
| 38.25.220.x/24 | 2026-06-08 12:17:59 GMT | blocked | blocked | ||
| 38.25.222.x/24 | 2026-05-25 13:26:49 GMT | blocked | blocked | ||
| 38.25.223.x/24 | 2025-05-09 20:03:23 GMT | blocked | received | ||
| 38.25.227.x/24 | 2025-05-09 20:14:31 GMT | received | received | ||
| 38.25.228.x/24 | 2026-04-07 12:12:12 GMT | blocked | blocked | ||
| 38.25.229.x/24 | 2025-11-16 11:19:05 GMT | received | received | ||
| 38.25.231.x/24 | 2025-07-15 22:53:35 GMT | rewritten | rewritten | ||
| 38.25.233.x/24 | 2026-03-26 21:08:19 GMT | rewritten | rewritten | ||
| 38.25.235.x/24 | 2026-06-11 12:27:39 GMT | blocked | blocked | ||
| 38.25.239.x/24 | 2026-05-08 13:33:01 GMT | rewritten | rewritten | ||
| 38.25.240.x/24 | 2026-05-08 12:34:44 GMT | blocked | received | ||
| 38.25.241.x/24 | 2025-08-12 12:07:40 GMT | ✔ | blocked | received | |
| 38.25.242.x/24 | 2026-06-03 23:39:09 GMT | received | received | ||
| 38.25.247.x/24 | 2026-05-04 18:21:50 GMT | rewritten | rewritten | ||
| 38.25.248.x/24 | 2024-10-30 11:28:18 GMT | blocked | blocked | ||
| 38.25.249.x/24 | 2026-06-05 17:18:32 GMT | blocked | blocked | ||
| 38.25.251.x/24 | 2026-09-08 17:00:00 GMT | blocked | blocked | ||
| 38.166.0.x/24 | 2025-11-21 03:33:07 GMT | rewritten | rewritten | ||
| 38.166.6.x/24 | 2025-05-18 20:54:58 GMT | rewritten | rewritten | ||
| 38.166.9.x/24 | 2025-11-15 15:26:13 GMT | blocked | blocked | ||
| 38.166.14.x/24 | 2026-01-06 00:12:27 GMT | rewritten | rewritten | ||
| 38.166.33.x/24 | 2025-10-19 22:47:09 GMT | rewritten | rewritten | ||
| 38.166.45.x/24 | 2025-05-04 18:09:37 GMT | rewritten | rewritten | ||
| 38.166.59.x/24 | 2025-06-12 02:29:08 GMT | rewritten | received | ||
| 38.166.71.x/24 | 2025-08-10 16:18:29 GMT | rewritten | rewritten | ||
| 38.166.112.x/24 | 2025-07-14 00:28:45 GMT | rewritten | rewritten | ||
| 38.166.115.x/24 | 2026-07-05 07:22:17 GMT | rewritten | rewritten | ||
| 38.166.121.x/24 | 2025-07-23 00:00:39 GMT | rewritten | rewritten | ||
| 38.166.123.x/24 | 2025-08-19 01:10:54 GMT | unknown | rewritten | ||
| 38.166.128.x/24 | 2025-11-21 03:35:22 GMT | blocked | blocked | ||
| 38.166.193.x/24 | 2024-09-15 14:19:44 GMT | blocked | received | ||
| 38.166.195.x/24 | 2024-09-16 02:40:30 GMT | blocked | received | ||
| 38.166.196.x/24 | 2024-11-19 14:38:40 GMT | blocked | received | ||
| 38.166.198.x/24 | 2026-07-15 13:47:42 GMT | rewritten | rewritten | ||
| 38.166.201.x/24 | 2026-06-19 00:59:54 GMT | blocked | blocked | ||
| 38.166.205.x/24 | 2024-11-26 15:45:25 GMT | received | received | ||
| 38.166.207.x/24 | 2024-11-05 13:52:21 GMT | blocked | received | ||
| 38.166.211.x/24 | 2025-12-18 13:45:55 GMT | blocked | blocked | ||
| 38.166.215.x/24 | 2023-06-16 01:14:06 GMT | blocked | received | ||
| 38.166.216.x/24 | 2026-07-03 14:19:14 GMT | rewritten | rewritten | ||
| 38.166.219.x/24 | 2026-08-01 15:10:51 GMT | blocked | blocked | ||
| 38.166.222.x/24 | 2025-05-25 22:01:59 GMT | rewritten | rewritten | ||
| 38.171.0.x/24 | 2025-11-21 03:41:17 GMT | blocked | blocked | ||
| 38.171.128.x/24 | 2023-07-03 13:04:17 GMT | rewritten | rewritten | ||
| 38.171.202.x/24 | 2026-08-28 21:28:48 GMT | rewritten | rewritten | ||
| 38.171.252.x/24 | 2026-08-11 18:40:02 GMT | blocked | blocked | ||
| 38.222.0.x/24 | 2025-11-21 03:41:20 GMT | blocked | blocked | ||
| 38.222.22.x/24 | 2025-03-13 15:47:36 GMT | rewritten | received | ||
| 38.222.128.x/24 | 2025-11-21 03:38:59 GMT | blocked | blocked | ||
| 38.222.192.x/24 | 2025-11-21 03:30:50 GMT | ✔ | blocked | ✔ | blocked |
| 38.222.193.x/24 | 2025-05-05 23:12:30 GMT | blocked | received | ||
| 38.222.194.x/24 | 2024-11-15 13:52:32 GMT | blocked | received | ||
| 38.222.195.x/24 | 2024-08-06 18:02:39 GMT | blocked | received | ||
| 38.222.196.x/24 | 2025-06-08 04:34:18 GMT | received | received | ||
| 38.222.197.x/24 | 2025-05-27 20:03:48 GMT | received | received | ||
| 38.222.198.x/24 | 2025-06-04 11:44:25 GMT | received | received | ||
| 38.222.199.x/24 | 2025-04-07 16:05:20 GMT | received | received | ||
| 38.222.200.x/24 | 2024-07-26 05:27:13 GMT | blocked | received | ||
| 38.222.201.x/24 | 2025-02-25 01:27:30 GMT | received | received | ||
| 38.222.202.x/24 | 2024-09-11 12:46:15 GMT | blocked | received | ||
| 38.222.203.x/24 | 2025-01-03 23:15:51 GMT | received | received | ||
| 38.222.204.x/24 | 2024-09-07 16:29:59 GMT | blocked | received | ||
| 38.222.205.x/24 | 2025-08-21 03:10:28 GMT | received | received | ||
| 38.222.206.x/24 | 2025-09-24 00:16:28 GMT | received | received | ||
| 38.222.207.x/24 | 2024-11-03 15:20:42 GMT | blocked | received | ||
| 38.222.208.x/24 | 2024-08-01 07:28:14 GMT | blocked | received | ||
| 38.222.209.x/24 | 2025-02-07 13:38:39 GMT | received | received | ||
| 38.222.210.x/24 | 2024-12-17 19:22:05 GMT | received | received | ||
| 38.222.211.x/24 | 2025-09-03 01:47:37 GMT | received | received | ||
| 38.222.212.x/24 | 2025-10-23 14:04:49 GMT | ✔ | blocked | received | |
| 38.222.215.x/24 | 2025-02-23 06:38:17 GMT | received | received | ||
| 38.222.216.x/24 | 2025-10-28 04:15:56 GMT | blocked | received | ||
| 38.222.217.x/24 | 2025-08-18 23:20:57 GMT | blocked | received | ||
| 38.222.218.x/24 | 2024-10-22 12:57:06 GMT | blocked | received | ||
| 38.222.219.x/24 | 2024-11-01 19:19:53 GMT | blocked | received | ||
| 38.222.220.x/24 | 2024-10-23 13:04:02 GMT | blocked | received | ||
| 38.222.221.x/24 | 2024-08-14 11:47:22 GMT | blocked | received | ||
| 38.222.222.x/24 | 2025-02-16 05:30:36 GMT | received | received | ||
| 38.222.223.x/24 | 2024-08-03 08:08:29 GMT | blocked | received | ||
| 38.222.224.x/24 | 2024-08-06 18:43:25 GMT | blocked | received | ||
| 38.222.225.x/24 | 2025-08-28 01:13:46 GMT | blocked | received | ||
| 38.222.226.x/24 | 2024-10-10 19:54:25 GMT | blocked | received | ||
| 38.222.227.x/24 | 2026-01-16 11:12:57 GMT | blocked | received | ||
| 38.222.228.x/24 | 2025-09-10 02:55:20 GMT | blocked | received | ||
| 38.222.229.x/24 | 2025-08-14 08:11:00 GMT | received | received | ||
| 38.222.230.x/24 | 2025-04-28 00:45:55 GMT | received | received | ||
| 38.222.231.x/24 | 2024-11-15 17:33:16 GMT | blocked | received | ||
| 38.222.232.x/24 | 2024-11-16 23:45:12 GMT | blocked | received | ||
| 38.222.233.x/24 | 2025-09-18 19:26:55 GMT | blocked | received | ||
| 38.222.234.x/24 | 2024-11-16 14:11:23 GMT | blocked | received | ||
| 38.222.235.x/24 | 2024-10-25 13:12:50 GMT | blocked | received | ||
| 38.222.236.x/24 | 2024-09-10 12:25:24 GMT | blocked | received | ||
| 38.222.237.x/24 | 2024-07-09 02:37:07 GMT | blocked | received | ||
| 38.222.238.x/24 | 2024-10-17 01:28:58 GMT | blocked | received | ||
| 38.222.239.x/24 | 2025-07-25 11:36:52 GMT | received | received | ||
| 38.222.240.x/24 | 2024-08-08 19:22:01 GMT | blocked | received | ||
| 38.222.242.x/24 | 2025-03-09 08:53:48 GMT | received | received | ||
| 38.222.243.x/24 | 2024-11-12 17:30:01 GMT | blocked | received | ||
| 38.222.244.x/24 | 2024-09-14 23:38:53 GMT | blocked | received | ||
| 38.222.245.x/24 | 2024-10-14 00:28:43 GMT | blocked | received | ||
| 38.222.246.x/24 | 2025-01-31 13:46:31 GMT | ✔ | received | ✔ | received |
| 38.222.247.x/24 | 2025-02-25 01:17:42 GMT | rewritten | received | ||
| 38.222.248.x/24 | 2025-12-17 02:39:36 GMT | blocked | received | ||
| 38.222.249.x/24 | 2024-12-03 16:52:06 GMT | received | received | ||
| 38.222.250.x/24 | 2024-10-09 19:34:02 GMT | blocked | received | ||
| 38.222.252.x/24 | 2025-03-17 12:41:56 GMT | received | received | ||
| 38.222.253.x/24 | 2024-11-10 22:29:48 GMT | blocked | received | ||
| 38.222.254.x/24 | 2024-11-15 23:09:10 GMT | blocked | received | ||
| 38.222.255.x/24 | 2025-06-18 01:54:13 GMT | received | received | ||
| 154.218.198.x/24 | 2026-05-22 02:03:19 GMT | blocked | blocked | ||
| 154.218.200.x/24 | 2026-07-30 23:25:09 GMT | rewritten | rewritten | ||
| 154.218.201.x/24 | 2026-06-13 06:09:13 GMT | blocked | blocked | ||
| 154.218.204.x/24 | 2026-06-19 13:27:52 GMT | rewritten | rewritten | ||
| 154.218.208.x/24 | 2026-07-02 15:02:24 GMT | rewritten | rewritten | ||
| 154.218.209.x/24 | 2026-05-22 13:55:19 GMT | blocked | blocked | ||
| 154.218.216.x/24 | 2026-09-02 13:59:25 GMT | rewritten | rewritten | ||
| 154.218.218.x/24 | 2026-08-24 00:05:20 GMT | rewritten | rewritten | ||
| 154.218.220.x/24 | 2026-03-12 20:01:29 GMT | blocked | blocked | ||
| 154.218.232.x/24 | 2026-08-13 21:59:06 GMT | blocked | blocked | ||
| 154.218.233.x/24 | 2026-07-06 12:40:08 GMT | rewritten | rewritten | ||
| 154.218.235.x/24 | 2026-08-29 02:36:14 GMT | blocked | blocked | ||
| 154.218.239.x/24 | 2026-07-08 10:45:08 GMT | rewritten | rewritten | ||
| 154.218.242.x/24 | 2026-06-25 06:47:34 GMT | blocked | blocked | ||
| 154.218.243.x/24 | 2026-08-14 19:10:01 GMT | rewritten | rewritten | ||
| 154.218.246.x/24 | 2026-09-09 02:02:34 GMT | rewritten | rewritten | ||
| 154.218.247.x/24 | 2026-07-18 14:20:32 GMT | blocked | blocked | ||
| 154.218.250.x/24 | 2026-03-06 22:16:43 GMT | blocked | blocked | ||
| 154.218.255.x/24 | 2026-07-15 19:10:48 GMT | rewritten | rewritten | ||
| 156.236.131.x/24 | 2026-05-07 04:03:49 GMT | blocked | blocked | ||
| 156.247.255.x/24 | 2024-12-03 13:40:45 GMT | blocked | blocked | ||
| 156.255.136.x/24 | 2026-09-04 12:45:16 GMT | rewritten | received | ||
| 156.255.137.x/24 | 2025-11-21 03:41:00 GMT | rewritten | rewritten | ||
| 156.255.144.x/24 | 2026-05-16 16:56:16 GMT | blocked | blocked | ||
| 156.255.148.x/24 | 2025-04-08 14:23:32 GMT | rewritten | rewritten | ||
| 156.255.149.x/24 | 2025-04-25 14:41:22 GMT | blocked | blocked | ||
| 156.255.152.x/24 | 2026-04-04 21:29:20 GMT | blocked | blocked | ||
| 156.255.159.x/24 | 2026-06-04 16:39:10 GMT | rewritten | rewritten | ||
| 156.255.160.x/24 | 2025-12-02 05:34:04 GMT | blocked | blocked | ||
| 156.255.192.x/24 | 2025-11-21 03:41:36 GMT | blocked | blocked | ||
| 156.255.232.x/24 | 2025-10-03 03:30:56 GMT | blocked | received | ||
| 156.255.233.x/24 | 2025-10-06 13:05:08 GMT | blocked | received | ||
| 186.148.192.x/24 | 2026-09-08 12:28:10 GMT | rewritten | rewritten | ||
| 186.148.194.x/24 | 2026-05-04 14:36:41 GMT | blocked | blocked | ||
| 190.124.28.x/24 | 2025-10-08 03:44:54 GMT | received | received | ||
| 190.124.30.x/24 | 2026-06-15 12:56:17 GMT | blocked | blocked | ||
| 190.124.31.x/24 | 2026-06-02 22:10:27 GMT | rewritten | rewritten | ||
| 206.1.128.x/24 | 2025-11-21 03:35:05 GMT | blocked | blocked | ||
| 206.62.167.x/24 | 2024-01-15 20:18:53 GMT | blocked | rewritten | ||
| 206.62.171.x/24 | 2024-06-08 18:36:42 GMT | rewritten | received | ||
| 206.62.172.x/24 | 2026-09-09 02:44:08 GMT | rewritten | rewritten | ||
| 206.62.176.x/24 | 2026-05-26 18:50:08 GMT | rewritten | rewritten | ||
| 2803:d700:xx::/40 | 2026-06-02 22:10:27 GMT | blocked | blocked | ||
| 2803:d700:20xx::/40 | 2026-06-04 16:39:10 GMT | blocked | blocked | ||
| 2803:d700:89xx::/40 | 2026-05-28 13:33:36 GMT | blocked | blocked | ||
| 2803:d700:aexx::/40 | 2025-08-29 20:57:32 GMT | blocked | blocked | ||
| 2803:d700:daxx::/40 | 2026-05-07 04:03:49 GMT | blocked | blocked | ||
| 2803:d700:dbxx::/40 | 2026-09-09 02:02:34 GMT | ✔ | blocked | received | |
| 2803:d700:dcxx::/40 | 2026-09-07 19:00:39 GMT | received | received | ||
| 2803:d700:dfxx::/40 | 2026-09-06 23:25:57 GMT | ✔ | blocked | ✔ | blocked |
| 2803:d700:e0xx::/40 | 2025-09-24 12:21:43 GMT | received | received | ||
This is the list of directly connected customers of AS 61461 from which we have received a spoofer test, ordered by the customer's ability to send spoofed packets and the number of prefixes of an inferred ingress ACL derived from prefix announcements for the customer recorded in the latest month of public BGP data. BCP-84 describes ingress ACLs as "the most bulletproof solution when done properly" and the "best fit ... when the configuration is not too dynamic, ... if the number of used prefixes is low." Further detail about the size and dynamism of an inferred ACL is available by following the History link for each AS.
| ASN | Country | Number of Prefixes in Customer Cone | Number of ASes in Customer Cone | Recent tests | Spoof Routable | 273843 (AS273843) | usa (United States) | 6 | 1 | AS 273843 tests | received | 273837 (AS273837) | ven (Venezuela) | 5 | 0 | AS 273837 tests | blocked |
|---|
The customer cone for 61461 is too large for a prefix list to be useful.