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 | ||
---|---|---|---|---|---|
51.15.2.x/24 | 2021-09-05 15:49:34 GMT | blocked | blocked | ||
51.15.10.x/24 | 2020-02-26 01:29:23 GMT | blocked | blocked | ||
51.15.71.x/24 | 2020-11-02 07:04:32 GMT | blocked | blocked | ||
51.15.73.x/24 | 2021-01-04 08:51:32 GMT | blocked | blocked | ||
51.15.91.x/24 | 2024-04-04 01:23:10 GMT | blocked | blocked | ||
51.15.144.x/24 | 2020-09-07 05:23:01 GMT | blocked | blocked | ||
51.15.145.x/24 | 2020-09-08 11:30:59 GMT | blocked | blocked | ||
51.15.146.x/24 | 2020-09-07 08:44:58 GMT | blocked | blocked | ||
51.15.147.x/24 | 2020-09-08 01:43:49 GMT | blocked | blocked | ||
51.15.148.x/24 | 2020-09-08 04:52:29 GMT | blocked | blocked | ||
51.15.151.x/24 | 2019-03-29 21:16:02 GMT | blocked | blocked | ||
51.15.152.x/24 | 2020-09-07 02:44:25 GMT | blocked | blocked | ||
51.15.153.x/24 | 2020-09-08 08:38:51 GMT | blocked | blocked | ||
51.15.154.x/24 | 2020-09-06 09:50:49 GMT | blocked | blocked | ||
51.15.156.x/24 | 2020-09-08 10:30:40 GMT | blocked | blocked | ||
51.15.157.x/24 | 2020-09-08 12:58:04 GMT | blocked | blocked | ||
51.15.173.x/24 | 2020-09-13 17:53:43 GMT | blocked | blocked | ||
51.15.180.x/24 | 2018-04-30 22:10:04 GMT | blocked | blocked | ||
51.15.197.x/24 | 2020-11-02 07:02:31 GMT | blocked | blocked | ||
51.15.199.x/24 | 2018-03-27 16:14:37 GMT | blocked | blocked | ||
51.158.24.x/24 | 2020-09-07 11:31:56 GMT | blocked | blocked | ||
51.158.30.x/24 | 2020-02-11 23:47:31 GMT | blocked | blocked | ||
51.158.37.x/24 | 2023-09-04 15:14:19 GMT | blocked | blocked | ||
51.158.55.x/24 | 2023-09-21 00:18:37 GMT | blocked | blocked | ||
51.158.68.x/24 | 2020-11-02 07:02:39 GMT | blocked | blocked | ||
51.158.102.x/24 | 2020-12-28 16:15:03 GMT | rewritten | rewritten | ||
51.158.174.x/24 | 2019-07-27 03:15:44 GMT | blocked | blocked | ||
51.158.184.x/24 | 2020-11-02 07:03:24 GMT | blocked | blocked | ||
51.158.188.x/24 | 2020-10-31 23:04:19 GMT | blocked | blocked | ||
51.159.1.x/24 | 2020-01-29 10:21:36 GMT | blocked | blocked | ||
51.159.29.x/24 | 2020-10-04 16:50:34 GMT | blocked | blocked | ||
51.159.55.x/24 | 2020-05-17 00:36:28 GMT | blocked | blocked | ||
51.159.59.x/24 | 2021-05-13 08:24:04 GMT | blocked | blocked | ||
51.159.80.x/24 | 2021-05-23 06:06:16 GMT | blocked | blocked | ||
51.159.88.x/24 | 2020-09-08 03:55:09 GMT | blocked | blocked | ||
51.159.90.x/24 | 2020-09-07 21:55:41 GMT | blocked | blocked | ||
51.159.105.x/24 | 2023-08-01 02:25:11 GMT | blocked | blocked | ||
51.159.144.x/24 | 2020-11-02 07:02:44 GMT | blocked | blocked | ||
51.159.194.x/24 | 2023-10-18 21:31:13 GMT | blocked | blocked | ||
51.159.195.x/24 | 2023-02-18 14:31:15 GMT | blocked | blocked | ||
51.159.210.x/24 | 2023-11-08 05:24:16 GMT | blocked | blocked | ||
51.159.211.x/24 | 2023-08-26 05:51:59 GMT | blocked | blocked | ||
51.159.212.x/24 | 2023-12-03 00:04:34 GMT | blocked | blocked | ||
51.159.213.x/24 | 2023-11-25 23:23:01 GMT | blocked | blocked | ||
51.159.215.x/24 | 2023-08-30 19:11:12 GMT | blocked | blocked | ||
51.159.220.x/24 | 2023-02-22 18:39:45 GMT | blocked | blocked | ||
51.159.222.x/24 | 2023-09-18 07:29:49 GMT | blocked | blocked | ||
51.159.223.x/24 | 2023-12-07 06:58:45 GMT | blocked | blocked | ||
62.4.8.x/24 | 2018-07-13 18:14:28 GMT | blocked | blocked | ||
62.4.16.x/24 | 2017-09-09 00:04:23 GMT | blocked | blocked | ||
62.210.8.x/24 | 2020-09-08 10:19:53 GMT | blocked | blocked | ||
62.210.11.x/24 | 2020-09-07 12:47:49 GMT | blocked | blocked | ||
62.210.12.x/24 | 2018-04-08 23:02:57 GMT | blocked | blocked | ||
62.210.14.x/24 | 2020-09-07 07:55:32 GMT | blocked | blocked | ||
62.210.26.x/24 | 2020-09-07 11:54:16 GMT | blocked | blocked | ||
62.210.28.x/24 | 2020-09-07 18:07:22 GMT | blocked | blocked | ||
62.210.38.x/24 | 2020-08-25 00:39:56 GMT | blocked | blocked | ||
62.210.75.x/24 | 2019-10-18 22:57:23 GMT | blocked | blocked | ||
62.210.76.x/24 | 2019-10-18 23:19:35 GMT | blocked | blocked | ||
62.210.88.x/24 | 2023-12-10 10:13:39 GMT | blocked | blocked | ||
62.210.89.x/24 | 2023-10-16 08:40:03 GMT | blocked | blocked | ||
62.210.95.x/24 | 2023-10-23 11:42:49 GMT | blocked | blocked | ||
62.210.100.x/24 | 2017-07-23 10:11:59 GMT | blocked | blocked | ||
62.210.107.x/24 | 2019-10-29 14:42:41 GMT | blocked | blocked | ||
62.210.113.x/24 | 2023-10-04 16:21:15 GMT | blocked | blocked | ||
62.210.122.x/24 | 2020-08-25 00:30:29 GMT | blocked | blocked | ||
62.210.145.x/24 | 2023-10-02 04:28:44 GMT | blocked | blocked | ||
62.210.149.x/24 | 2018-07-11 21:29:11 GMT | blocked | blocked | ||
62.210.173.x/24 | 2023-09-17 22:15:59 GMT | blocked | blocked | ||
62.210.177.x/24 | 2019-10-12 13:57:35 GMT | blocked | blocked | ||
62.210.189.x/24 | 2019-01-26 16:38:04 GMT | blocked | blocked | ||
62.210.198.x/24 | 2016-09-28 15:30:52 GMT | blocked | blocked | ||
62.210.217.x/24 | 2023-09-14 02:29:01 GMT | blocked | blocked | ||
62.210.222.x/24 | 2020-08-25 00:35:13 GMT | blocked | blocked | ||
151.115.56.x/24 | 2021-01-05 15:47:37 GMT | blocked | blocked | ||
163.172.24.x/24 | 2017-03-12 19:04:33 GMT | blocked | blocked | ||
163.172.25.x/24 | 2017-03-27 18:41:47 GMT | blocked | blocked | ||
163.172.27.x/24 | 2020-09-01 00:09:09 GMT | blocked | blocked | ||
163.172.37.x/24 | 2020-10-09 04:07:53 GMT | blocked | blocked | ||
163.172.38.x/24 | 2020-10-09 04:08:08 GMT | blocked | blocked | ||
163.172.42.x/24 | 2020-10-09 04:08:55 GMT | blocked | blocked | ||
163.172.43.x/24 | 2020-10-09 14:01:31 GMT | blocked | blocked | ||
163.172.46.x/24 | 2020-10-09 04:10:13 GMT | blocked | blocked | ||
163.172.82.x/24 | 2019-11-21 10:04:57 GMT | blocked | blocked | ||
163.172.85.x/24 | 2022-11-20 21:38:31 GMT | blocked | blocked | ||
163.172.97.x/24 | 2018-05-16 15:11:26 GMT | received | received | ||
163.172.113.x/24 | 2018-08-04 00:42:15 GMT | blocked | blocked | ||
163.172.139.x/24 | 2019-05-24 13:30:02 GMT | blocked | blocked | ||
163.172.169.x/24 | 2016-10-04 07:29:00 GMT | blocked | blocked | ||
163.172.179.x/24 | 2016-11-28 11:19:41 GMT | blocked | blocked | ||
163.172.189.x/24 | 2016-10-02 19:13:47 GMT | blocked | blocked | ||
163.172.206.x/24 | 2020-08-26 21:32:51 GMT | blocked | blocked | ||
163.172.211.x/24 | 2020-09-01 00:15:06 GMT | blocked | blocked | ||
163.172.215.x/24 | 2020-10-09 14:06:44 GMT | blocked | blocked | ||
163.172.219.x/24 | 2021-10-12 20:26:21 GMT | blocked | blocked | ||
163.172.222.x/24 | 2020-04-26 06:46:10 GMT | blocked | blocked | ||
163.172.225.x/24 | 2020-09-08 10:32:57 GMT | blocked | blocked | ||
163.172.226.x/24 | 2020-09-08 09:31:27 GMT | blocked | blocked | ||
163.172.230.x/24 | 2020-09-07 02:27:01 GMT | blocked | blocked | ||
163.172.231.x/24 | 2020-09-06 00:29:03 GMT | blocked | blocked | ||
195.154.25.x/24 | 2020-03-05 10:25:28 GMT | blocked | blocked | ||
195.154.27.x/24 | 2019-12-14 19:03:04 GMT | blocked | blocked | ||
195.154.29.x/24 | 2020-08-23 15:20:08 GMT | blocked | blocked | ||
195.154.33.x/24 | 2020-09-06 13:38:10 GMT | blocked | blocked | ||
195.154.35.x/24 | 2020-09-06 09:01:42 GMT | blocked | blocked | ||
195.154.36.x/24 | 2020-09-08 09:54:21 GMT | blocked | blocked | ||
195.154.37.x/24 | 2020-09-07 10:36:17 GMT | blocked | blocked | ||
195.154.38.x/24 | 2020-09-08 05:00:30 GMT | blocked | blocked | ||
195.154.39.x/24 | 2020-09-29 18:51:45 GMT | blocked | blocked | ||
195.154.40.x/24 | 2020-09-08 05:42:38 GMT | blocked | blocked | ||
195.154.41.x/24 | 2020-09-06 21:20:02 GMT | blocked | blocked | ||
195.154.42.x/24 | 2020-09-08 13:54:00 GMT | blocked | blocked | ||
195.154.43.x/24 | 2020-09-07 17:23:28 GMT | blocked | blocked | ||
195.154.44.x/24 | 2020-09-07 08:53:38 GMT | blocked | blocked | ||
195.154.45.x/24 | 2020-09-08 10:39:24 GMT | blocked | blocked | ||
195.154.46.x/24 | 2020-08-26 21:37:58 GMT | blocked | blocked | ||
195.154.47.x/24 | 2020-09-06 23:38:25 GMT | blocked | blocked | ||
195.154.48.x/24 | 2020-09-07 10:50:50 GMT | blocked | blocked | ||
195.154.51.x/24 | 2020-09-08 13:40:52 GMT | blocked | blocked | ||
195.154.56.x/24 | 2020-08-14 15:56:53 GMT | blocked | blocked | ||
195.154.58.x/24 | 2020-08-26 21:53:27 GMT | blocked | blocked | ||
195.154.61.x/24 | 2020-08-26 21:58:35 GMT | blocked | blocked | ||
195.154.62.x/24 | 2020-08-26 22:03:58 GMT | blocked | blocked | ||
195.154.63.x/24 | 2020-09-07 11:21:57 GMT | blocked | blocked | ||
195.154.79.x/24 | 2017-02-17 19:44:49 GMT | blocked | blocked | ||
195.154.146.x/24 | 2020-08-25 00:26:19 GMT | blocked | blocked | ||
195.154.161.x/24 | 2018-12-21 16:51:10 GMT | blocked | blocked | ||
195.154.162.x/24 | 2017-07-03 09:01:23 GMT | blocked | blocked | ||
195.154.166.x/24 | 2020-07-20 00:34:13 GMT | blocked | blocked | ||
195.154.168.x/24 | 2017-10-15 16:09:58 GMT | rewritten | rewritten | ||
195.154.172.x/24 | 2016-09-23 07:59:33 GMT | blocked | blocked | ||
195.154.189.x/24 | 2017-08-04 20:21:51 GMT | blocked | blocked | ||
195.154.191.x/24 | 2017-05-19 08:49:18 GMT | blocked | blocked | ||
195.154.200.x/24 | 2023-11-23 07:55:54 GMT | blocked | blocked | ||
195.154.204.x/24 | 2017-03-18 13:26:57 GMT | rewritten | rewritten | ||
195.154.209.x/24 | 2017-09-24 20:10:25 GMT | blocked | blocked | ||
195.154.228.x/24 | 2018-04-13 14:05:57 GMT | blocked | blocked | ||
195.154.230.x/24 | 2023-04-26 13:18:23 GMT | blocked | blocked | ||
195.154.235.x/24 | 2020-06-17 00:32:37 GMT | blocked | blocked | ||
195.154.237.x/24 | 2017-08-01 16:52:57 GMT | blocked | blocked | ||
195.154.253.x/24 | 2016-09-22 22:00:40 GMT | blocked | blocked | ||
212.47.238.x/24 | 2016-10-20 13:06:59 GMT | blocked | blocked | ||
212.47.243.x/24 | 2016-11-11 18:05:54 GMT | blocked | blocked | ||
212.47.250.x/24 | 2016-03-22 15:03:47 GMT | blocked | blocked | ||
212.83.133.x/24 | 2021-08-20 21:02:57 GMT | blocked | blocked | ||
212.83.134.x/24 | 2020-09-06 23:56:07 GMT | blocked | blocked | ||
212.83.135.x/24 | 2020-09-06 08:01:58 GMT | blocked | blocked | ||
212.83.136.x/24 | 2020-09-07 10:14:11 GMT | blocked | blocked | ||
212.83.140.x/24 | 2020-08-24 21:16:21 GMT | blocked | blocked | ||
212.83.147.x/24 | 2020-09-07 08:17:54 GMT | blocked | blocked | ||
212.83.149.x/24 | 2020-09-07 08:07:44 GMT | blocked | blocked | ||
212.83.151.x/24 | 2020-09-08 00:33:44 GMT | blocked | blocked | ||
212.83.152.x/24 | 2020-09-08 11:46:58 GMT | blocked | blocked | ||
212.83.158.x/24 | 2020-06-17 00:19:08 GMT | blocked | blocked | ||
212.83.161.x/24 | 2020-09-07 23:38:12 GMT | blocked | blocked | ||
212.83.163.x/24 | 2020-10-12 05:27:17 GMT | blocked | blocked | ||
212.83.170.x/24 | 2020-08-26 22:33:46 GMT | blocked | blocked | ||
212.83.171.x/24 | 2020-10-12 05:28:31 GMT | blocked | blocked | ||
212.83.175.x/24 | 2016-12-07 21:49:05 GMT | blocked | blocked | ||
212.83.178.x/24 | 2018-10-08 01:09:09 GMT | blocked | blocked | ||
212.83.181.x/24 | 2020-08-26 22:37:07 GMT | blocked | blocked | ||
212.83.189.x/24 | 2020-08-26 22:46:06 GMT | blocked | blocked | ||
212.129.4.x/24 | 2019-01-06 06:16:09 GMT | blocked | blocked | ||
212.129.5.x/24 | 2020-08-26 22:16:18 GMT | blocked | blocked | ||
212.129.10.x/24 | 2020-09-08 16:34:51 GMT | blocked | blocked | ||
212.129.18.x/24 | 2020-09-07 00:41:51 GMT | blocked | blocked | ||
212.129.20.x/24 | 2020-09-06 11:40:21 GMT | blocked | blocked | ||
212.129.25.x/24 | 2017-03-26 18:52:57 GMT | blocked | blocked | ||
212.129.29.x/24 | 2020-09-07 21:40:39 GMT | blocked | blocked | ||
212.129.32.x/24 | 2020-09-07 00:50:13 GMT | blocked | blocked | ||
212.129.34.x/24 | 2020-09-08 03:22:56 GMT | blocked | blocked | ||
212.129.37.x/24 | 2020-08-26 22:11:10 GMT | blocked | blocked | ||
212.129.47.x/24 | 2017-11-23 15:33:45 GMT | blocked | blocked | ||
212.129.50.x/24 | 2020-08-26 22:21:27 GMT | blocked | blocked | ||
212.129.52.x/24 | 2020-08-26 22:26:35 GMT | blocked | blocked | ||
212.129.58.x/24 | 2017-05-19 19:24:54 GMT | blocked | blocked | ||
2001:bc8:6xx::/40 | 2022-04-02 03:09:59 GMT | blocked | blocked | ||
2001:bc8:12xx::/40 | 2023-11-25 23:23:01 GMT | blocked | blocked | ||
2001:bc8:16xx::/40 | 2024-04-04 01:23:10 GMT | blocked | blocked | ||
2001:bc8:18xx::/40 | 2023-11-30 05:36:35 GMT | received | received | ||
2001:bc8:1exx::/40 | 2021-01-05 15:47:37 GMT | blocked | blocked | ||
2001:bc8:38xx::/40 | 2017-03-27 18:41:47 GMT | blocked | blocked | ||
2001:bc8:47xx::/40 | 2020-11-02 07:02:39 GMT | blocked | blocked | ||
2001:bc8:48xx::/40 | 2018-04-13 18:48:17 GMT | blocked | blocked | ||
2001:bc8:60xx::/40 | 2020-01-29 10:21:36 GMT | blocked | blocked |
This is the address space announcement history of an AS and its customer cone, derived from prefix announcements for the AS recorded in public BGP data. For each month, we have aggregated more specific prefix announcements into contiguous address blocks, where possible. The goal of this page is to allow a network operator to judge the feasibility of deploying a static ingress access control list for their border router connecting to the AS. 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."
Year |2022 2023 2024
Month |Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr
————————————————————————+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+
51.15.0.0/16 |————————————————————————————————————————————————————————————————————————————————————————————————————
51.158.0.0/15 |————————————————————————————————————————————————————————————————————————————————————————————————————
62.4.0.0/19 |————————————————————————————————————————————————————————————————————————————————————————————————————
62.210.0.0/16 |————————————————————————————————————————————————————————————————————————————————————————————————————
151.115.0.0/17 | ————————————————————————————————————————————————————————————————————————————————————————
151.115.0.0/18 |————————————
163.172.0.0/16 |————————————————————————————————————————————————————————————————————————————————————————————————————
195.154.0.0/16 |————————————————————————————————————————————————————————————————————————————————————————————————————
212.47.224.0/19 |————————————————————————————————————————————————————————————————————————————————————————————————————
212.83.128.0/18 |————————————————————————————————————————————————————————————————————————————————————————————————————
212.129.0.0/18 |————————————————————————————————————————————————————————————————————————————————————————————————————
————————————————————————+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+
2001:bc8::/32 |————————————————————————————————————————————————————————————————————————————————————————————————————
————————————————————————+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+
Month |Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr
Year |2022 2023 2024