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 | ||
---|---|---|---|---|---|
23.228.159.x/24 | 2019-09-25 19:05:37 GMT | blocked | blocked | ||
99.198.160.x/24 | 2018-04-23 17:45:41 GMT | rewritten | blocked | ||
99.198.172.x/24 | 2017-12-18 01:14:45 GMT | rewritten | blocked | ||
99.198.180.x/24 | 2016-08-22 08:31:46 GMT | rewritten | rewritten | ||
99.198.204.x/24 | 2017-04-02 02:15:08 GMT | rewritten | blocked | ||
99.198.218.x/24 | 2016-10-21 17:09:17 GMT | rewritten | rewritten | ||
107.188.139.x/24 | 2017-04-29 17:13:54 GMT | rewritten | blocked | ||
107.188.193.x/24 | 2019-09-26 02:10:56 GMT | rewritten | rewritten | ||
136.32.3.x/24 | 2024-01-15 04:56:54 GMT | rewritten | rewritten | ||
136.32.5.x/24 | 2018-11-17 01:57:06 GMT | rewritten | rewritten | ||
136.32.89.x/24 | 2019-05-23 01:11:27 GMT | rewritten | rewritten | ||
136.32.159.x/24 | 2022-06-03 23:30:49 GMT | rewritten | rewritten | ||
136.32.174.x/24 | 2018-05-13 18:24:24 GMT | rewritten | rewritten | ||
136.32.178.x/24 | 2016-12-04 18:59:23 GMT | rewritten | rewritten | ||
136.32.179.x/24 | 2017-01-05 04:35:23 GMT | rewritten | rewritten | ||
136.33.155.x/24 | 2023-11-22 06:34:01 GMT | rewritten | rewritten | ||
136.35.35.x/24 | 2019-09-13 14:45:06 GMT | rewritten | rewritten | ||
136.35.189.x/24 | 2025-02-12 20:25:24 GMT | rewritten | rewritten | ||
136.35.220.x/24 | 2024-11-01 22:09:02 GMT | rewritten | rewritten | ||
136.35.230.x/24 | 2019-12-27 20:02:05 GMT | rewritten | rewritten | ||
136.36.58.x/24 | 2021-12-13 04:46:39 GMT | rewritten | rewritten | ||
136.36.153.x/24 | 2020-12-22 18:04:19 GMT | rewritten | rewritten | ||
136.41.224.x/24 | 2020-01-15 13:41:38 GMT | rewritten | rewritten | ||
136.49.201.x/24 | 2019-10-24 13:22:40 GMT | rewritten | rewritten | ||
136.50.56.x/24 | 2020-03-18 14:22:48 GMT | rewritten | rewritten | ||
136.50.58.x/24 | 2021-10-11 20:29:57 GMT | rewritten | rewritten | ||
136.50.61.x/24 | 2019-12-14 04:17:40 GMT | rewritten | rewritten | ||
136.50.137.x/24 | 2022-01-23 22:10:18 GMT | rewritten | rewritten | ||
136.50.170.x/24 | 2022-10-05 22:28:24 GMT | rewritten | rewritten | ||
136.52.32.x/24 | 2022-08-20 23:39:15 GMT | rewritten | rewritten | ||
136.52.104.x/24 | 2025-02-12 22:37:53 GMT | rewritten | rewritten | ||
136.54.20.x/24 | 2023-03-20 19:36:02 GMT | rewritten | rewritten | ||
136.55.1.x/24 | 2021-09-12 01:24:31 GMT | rewritten | blocked | ||
136.55.8.x/24 | 2022-03-07 15:34:04 GMT | rewritten | blocked | ||
136.55.12.x/24 | 2024-06-17 11:21:19 GMT | blocked | blocked | ||
136.55.216.x/24 | 2019-09-23 21:15:44 GMT | rewritten | blocked | ||
136.56.37.x/24 | 2020-01-15 14:17:16 GMT | rewritten | rewritten | ||
136.56.44.x/24 | 2022-01-19 16:53:27 GMT | blocked | blocked | ||
136.56.47.x/24 | 2019-11-14 17:28:06 GMT | blocked | blocked | ||
136.56.51.x/24 | 2018-06-22 11:30:13 GMT | rewritten | rewritten | ||
136.56.80.x/24 | 2024-08-31 21:27:20 GMT | rewritten | rewritten | ||
136.56.167.x/24 | 2023-06-01 16:27:55 GMT | blocked | blocked | ||
136.56.174.x/24 | 2021-11-13 19:56:30 GMT | blocked | blocked | ||
136.59.0.x/24 | 2017-07-24 21:16:03 GMT | rewritten | rewritten | ||
136.59.246.x/24 | 2018-01-28 18:48:04 GMT | rewritten | rewritten | ||
136.60.172.x/24 | 2016-11-11 17:19:12 GMT | rewritten | rewritten | ||
136.60.175.x/24 | 2017-10-14 02:23:58 GMT | blocked | blocked | ||
136.61.100.x/24 | 2019-08-13 00:26:14 GMT | rewritten | rewritten | ||
136.61.122.x/24 | 2017-11-18 02:10:55 GMT | rewritten | rewritten | ||
136.63.146.x/24 | 2016-11-23 22:59:58 GMT | blocked | blocked | ||
136.63.223.x/24 | 2016-04-18 20:02:13 GMT | rewritten | rewritten | ||
136.63.225.x/24 | 2016-11-10 17:56:24 GMT | blocked | blocked | ||
136.63.232.x/24 | 2016-11-12 20:17:40 GMT | rewritten | rewritten | ||
216.21.166.x/24 | 2016-09-26 12:54:11 GMT | blocked | blocked | ||
2605:a601:5xx::/40 | 2017-04-29 17:13:54 GMT | blocked | blocked | ||
2605:a601:7xx::/40 | 2019-10-14 15:14:24 GMT | blocked | blocked | ||
2605:a601:8xx::/40 | 2017-04-02 02:15:08 GMT | blocked | blocked | ||
2605:a601:9xx::/40 | 2018-04-23 17:45:41 GMT | blocked | blocked | ||
2605:a601:axx::/40 | 2018-08-31 23:59:30 GMT | blocked | blocked | ||
2605:a601:cxx::/40 | 2017-01-01 23:09:49 GMT | blocked | blocked | ||
2605:a601:30xx::/40 | 2017-10-14 02:23:58 GMT | blocked | blocked | ||
2605:a601:51xx::/40 | 2019-09-23 21:15:44 GMT | blocked | blocked | ||
2605:a601:52xx::/40 | 2017-01-29 19:00:04 GMT | blocked | blocked | ||
2605:a601:55xx::/40 | 2022-03-10 23:25:39 GMT | blocked | blocked | ||
2605:a601:80xx::/40 | 2018-06-22 11:30:13 GMT | blocked | blocked | ||
2605:a601:a6xx::/40 | 2020-01-15 14:17:16 GMT | blocked | blocked | ||
2605:a601:a7xx::/40 | 2024-12-20 06:45:12 GMT | blocked | blocked | ||
2605:a601:a9xx::/40 | 2021-01-31 21:01:31 GMT | blocked | blocked | ||
2605:a601:aaxx::/40 | 2019-10-23 12:03:44 GMT | blocked | blocked | ||
2605:a601:aexx::/40 | 2025-02-12 20:25:24 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 |2023 2024 2025
Month |Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb
——————————————————————————+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+
23.228.128.0/18 |————————————————————————————————————————————————————————————————————————————————————————————————————
23.255.128.0/17 |————————————————————————————————————————————————————————————————————————————————————————————————————
45.56.0.0/18 |————————————————————————————————————————————————————————————————————————————————————————————————————
99.198.128.0/17 |————————————————————————————————————————————————————————————————————————————————————————————————————
107.188.128.0/17 |————————————————————————————————————————————————————————————————————————————————————————————————————
136.24.0.0/15 |————————————————————————————————————————————————————————————————————————————————————————————————————
136.26.0.0/17 |————————————————————————————————————————————————————————————————————————————————————————————————————
136.26.128.0/18 |————————————————————————————————————————————————————————————————————————————————————————————————————
136.27.0.0/16 |————————————————————————————————————————————————————————————————————————————————————————————————————
136.28.0.0/14 | ————————————
136.28.0.0/16 |————————————————————————————————————————————————————————————————————————————————————————
136.29.0.0/17 |————————————————————————————————————————————————————————————————————————————————————————
136.29.128.0/18 |————————————————————————————————————————————————————————————————————————————————————————
136.29.192.0/20 | ————————————————
136.29.224.0/19 |———————————— ————————————————————————————————————————————————————————————————————
136.29.240.0/20 | ————————
136.30.0.0/15 |————————————————————————————————————————————————————————————————————————————————————————
136.32.0.0/11 |————————————————————————————————————————————————————————————————————————————————————————————————————
162.216.196.0/22 |————————————————————————————————————————————————————————————————————————————————————————————————————
162.222.100.0/22 |————————————————————————————————————————————————————————————————————————————————————————————————————
173.247.192.0/20 |————————————————————————————————————————————————————————————————————————————————————————————————————
192.77.236.0/22 |————————————————————————————————————————————————————————————————————————————————————————————————————
192.80.0.0/21 |————————————————————————————————————————————————————————————————————————————————————————————————————
192.119.16.0/20 |————————————————————————————————————————————————————————————————————————————————————————————————————
192.200.224.0/19 |————————————————————————————————————————————————————————————————————————————————————————————————————
199.21.84.0/22 |————————————————————————————————————————————————————————————————————————————————————————————————————
199.87.80.0/21 |————————————————————————————————————————————————————————————————————————————————————————————————————
204.14.152.0/21 |————————————————————————————————————————————————————————————————————————————————————————————————————
204.28.112.0/20 |————————————————————————————————————————————————————————————————————————————————————————————————————
208.66.24.0/21 |————————————————————————————————————————————————————————————————————————————————————————————————————
208.72.136.0/21 |————————————————————————————————————————————————————————————————————————————————————————————————————
208.80.64.0/21 |————————————————————————————————————————————————————————————————————————————————————————————————————
208.87.56.0/22 |————————————————————————————————————————————————————————————————————————————————————————————————————
208.87.60.0/23 |————————————————————————————————————————————————————————————————————————————————————————————————————
209.40.88.0/21 | ————————————————————————————————————————————
216.21.160.0/20 |————————————————————————————————————————————————————————————————————————————————————————————————————
——————————————————————————+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+
2604:5500:2800::/38 | ————————————
2604:5500:3000::/38 |————————————————————————————————————————————————————————————————————————————————————————————————————
2604:5500:4000::/38 |————————————————————————————————————————————————————————————————————————————————————————————————————
2604:5500:5000::/38 |————————————————————————————————————————————————————————————————————————————————————————————————————
2604:5500:7000::/38 |————————————————————————————————————————————————————————————————————————————————————————————————————
2604:5500:8000::/38 |————————————————————————————————————————————————————————————————————————————————————————————————————
2604:5500:8800::/38 | ————————————————————————————
2604:5500:9000::/38 |————————————————————————————————————————————————————————————————————————————————————————————————————
2604:5500:a000::/38 |————————————————————————————————————————————————————————————————————————————————————————————————————
2604:5500:ac00::/38 |————————————————————————————————————————————————————————————————————————————————————————————————————
2604:5500:b400::/38 |————————————————————————————————————————————————————————————————————————————————————————————————————
2604:5500:c000::/35 |————————————————————————————————————————————————————————————————————————————————————————————————————
2604:5500:e000::/36 | ————————————————————————————————————————————————————————————————————————————————
2604:5500:e000::/38 |————————————————————
2604:5500:e800::/37 |————————————————————
2604:5500:f000::/37 |————————————————————————————————————————————————————————————————————————————————————————————————————
2604:5500:f800::/38 |————————————————————————————————————————————————————————————————————————————————————————————————————
2604:5500::/42 |————————————————————————————————————————————————————————————————————————————————————————————————————
2604:5500:800::/42 |————————————————————————————————————————————————————————————————————————————————————————————————————
2604:5500:c00::/42 |————————————————————————————————————————————————————————————————————————————————————————————————————
2604:5500:1000::/42 |————————————————————————————————————————————————————————————————————————————————————————————————————
2605:a600::/31 |————————————————————————————————————————————————————————————————————————————————————————————————————
——————————————————————————+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+
Month |Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb
Year |2023 2024 2025