| 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 | ||
|---|---|---|---|---|---|
| 120.206.169.x/24 | 2025-09-10 14:29:07 GMT | rewritten | rewritten | ||
| 2409:8a38:14xx::/40 | 2025-09-10 14:29:07 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 |20232024 2025
Month |Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
——————————————————————+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+
39.158.0.0/18 | ————
39.158.96.0/20 | ————
39.158.128.0/19 | ————
39.158.160.0/20 | ————
39.158.176.0/21 | ————
39.159.0.0/19 | ————
39.160.16.0/20 | ————
39.160.160.0/20 | ————
39.161.128.0/20 | ————
39.166.0.0/18 | ————
39.166.160.0/19 | ————
39.167.0.0/19 | ————
39.167.160.0/19 | ————
39.168.0.0/19 | ————
39.168.32.0/21 | ————
39.168.80.0/20 | ————
39.168.128.0/19 | ————
39.168.192.0/20 | ————
39.176.128.0/19 | ————
39.176.196.0/22 | ————
39.176.200.0/21 | ————
39.176.224.0/20 | ————
39.176.240.0/22 | ————
39.177.16.0/22 | ————
39.177.24.0/22 | ————
39.177.32.0/23 | ————
39.177.128.0/17 | ————
39.178.32.0/19 | ————
39.178.224.0/20 | ————
39.179.128.0/19 | ————
39.179.168.0/21 | ————
39.179.176.0/20 | ————
39.179.192.0/21 | ————
112.54.123.0/24 | ————
117.162.64.0/20 | ————
117.162.80.0/21 | ————
117.162.94.0/23 | ————
117.162.96.0/19 | ————
117.162.128.0/17 | ————
117.163.0.0/19 | ————
117.163.32.0/22 | ————
117.163.64.0/19 | ————
117.163.160.0/19 | ————
117.163.192.0/18 | ————
117.164.32.0/20 | ————
117.164.64.0/21 | ————
117.164.120.0/21 | ————
117.164.128.0/18 | ————
117.164.224.0/20 | ————
117.164.240.0/21 | ————
117.165.0.0/20 | ————
117.165.32.0/19 | ————
117.165.96.0/20 | ————
117.165.160.0/19 | ————
117.165.192.0/18 | ————
117.166.32.0/20 | ————
117.166.48.0/21 | ————
117.166.56.0/22 | ————
117.166.60.0/24 | ————
117.166.192.0/18 | ————
117.167.0.0/18 | ————
117.167.64.0/20 | ————
117.167.80.0/21 | ————
117.167.128.0/18 | ————
117.167.192.0/20 | ————
117.167.224.0/20 | ————
117.168.32.0/20 | ————
117.168.120.0/21 | ————
117.168.132.0/22 | ————
117.168.136.0/23 | ————
117.168.178.0/24 | ————
117.168.208.0/21 | ————
117.168.224.0/22 | ————
117.168.228.0/23 | ————
117.168.232.0/23 | ————
117.168.236.0/22 | ————
117.168.240.0/22 | ————
117.168.244.0/23 | ————
117.169.26.0/23 | ————
117.169.28.0/22 | ————
117.169.38.0/24 | ————
117.169.116.0/22 | ————
117.169.123.0/24 | ————
117.169.125.0/24 | ————
117.169.186.0/23 | ————
117.169.188.0/22 | ————
117.169.192.0/18 | ————
117.170.0.0/18 | ————
117.170.64.0/19 | ————
117.170.96.0/20 | ————
117.170.128.0/19 | ————
117.170.160.0/21 | ————
117.170.200.0/21 | ————
117.170.216.0/21 | ————
117.170.232.0/21 | ————
117.170.240.0/20 | ————
117.171.16.0/20 | ————
117.171.32.0/20 | ————
117.171.48.0/22 | ————
117.171.64.0/18 | ————
117.171.128.0/20 | ————
117.171.160.0/19 | ————
117.171.192.0/20 | ————
117.178.0.0/20 | ————
117.178.32.0/20 | ————
117.178.56.0/21 | ————
117.178.80.0/20 | ————
117.178.96.0/19 | ————
117.178.128.0/19 | ————
117.178.192.0/19 | ————
117.178.224.0/24 | ————
117.178.238.0/24 | ————
117.178.243.0/24 | ————
120.203.15.0/24 | ————
120.203.25.0/24 | ————
120.203.64.0/24 | ————
120.203.74.0/23 | ————
120.203.76.0/22 | ————
120.203.82.0/24 | ————
120.203.84.0/22 | ————
120.203.88.0/22 | ————
120.203.96.0/22 | ————
120.203.101.0/24 | ————
120.203.102.0/23 | ————
120.203.104.0/21 | ————
120.203.116.0/22 | ————
120.203.123.0/24 | ————
120.203.124.0/24 | ————
120.203.127.0/24 | ————
120.203.128.0/22 | ————
120.203.135.0/24 | ————
120.203.136.0/21 | ————
120.203.144.0/24 | ————
120.203.148.0/22 | ————
120.203.153.0/24 | ————
120.203.154.0/23 | ————
120.203.158.0/23 | ————
120.203.160.0/23 | ————
120.203.168.0/21 | ————
120.203.176.0/22 | ————
120.203.180.0/23 | ————
120.203.182.0/24 | ————
120.203.184.0/22 | ————
120.203.189.0/24 | ————
120.203.194.0/23 | ————
120.203.196.0/23 | ————
120.203.198.0/24 | ————
120.203.201.0/24 | ————
120.203.202.0/23 | ————
120.203.204.0/23 | ————
120.203.206.0/24 | ————
120.203.208.0/22 | ————
120.203.212.0/23 | ————
120.203.232.0/21 | ————
120.203.240.0/23 | ————
120.203.244.0/22 | ————
120.203.248.0/21 | ————
120.206.46.0/24 | ————
120.206.70.0/24 | ————
120.206.72.0/21 | ————
120.206.80.0/21 | ————
120.206.88.0/22 | ————
120.206.92.0/23 | ————
120.206.94.0/24 | ————
120.206.96.0/20 | ————
120.206.114.0/23 | ————
120.206.116.0/22 | ————
120.206.128.0/20 | ————
120.206.144.0/21 | ————
120.206.168.0/21 | ————
120.206.192.0/22 | ————
120.206.196.0/23 | ————
120.206.200.0/21 | ————
120.206.210.0/23 | ————
120.206.212.0/23 | ————
120.206.218.0/23 | ————
120.206.220.0/22 | ————
120.206.224.0/20 | ————
183.216.96.0/19 | ————
183.216.128.0/19 | ————
183.216.192.0/18 | ————
183.217.96.0/20 | ————
183.217.114.0/23 | ————
183.217.116.0/22 | ————
183.217.120.0/21 | ————
183.217.128.0/20 | ————
183.217.176.0/22 | ————
183.217.185.0/24 | ————
183.217.186.0/23 | ————
183.217.188.0/22 | ————
183.217.192.0/19 | ————
183.217.224.0/22 | ————
183.217.228.0/23 | ————
183.217.232.0/22 | ————
183.217.242.0/23 | ————
183.217.245.0/24 | ————
183.217.247.0/24 | ————
183.217.250.0/23 | ————
183.217.252.0/22 | ————
183.218.0.0/21 | ————
183.218.13.0/24 | ————
183.218.14.0/23 | ————
183.218.16.0/23 | ————
183.218.20.0/22 | ————
183.218.28.0/23 | ————
183.218.31.0/24 | ————
183.218.32.0/21 | ————
183.218.40.0/24 | ————
183.218.47.0/24 | ————
183.218.48.0/20 | ————
183.218.64.0/20 | ————
183.218.81.0/24 | ————
183.218.82.0/24 | ————
183.218.84.0/22 | ————
183.218.88.0/23 | ————
183.218.94.0/23 | ————
183.218.96.0/22 | ————
183.218.100.0/23 | ————
183.218.103.0/24 | ————
183.218.104.0/21 | ————
183.218.113.0/24 | ————
183.218.114.0/23 | ————
183.218.116.0/22 | ————
183.218.120.0/22 | ————
183.218.126.0/24 | ————
183.219.0.0/18 | ————
183.219.64.0/22 | ————
183.219.72.0/21 | ————
183.219.80.0/20 | ————
183.219.98.0/23 | ————
183.219.100.0/22 | ————
183.219.104.0/21 | ————
183.219.112.0/20 | ————
183.219.128.0/23 | ————
183.219.132.0/23 | ————
183.219.146.0/23 | ————
183.219.148.0/22 | ————
183.219.152.0/21 | ————
183.219.160.0/21 | ————
183.219.168.0/23 | ————
183.219.172.0/22 | ————
183.219.210.0/23 | ————
183.219.212.0/22 | ————
183.219.216.0/21 | ————
183.219.224.0/21 | ————
183.219.232.0/23 | ————
183.219.235.0/24 | ————
183.219.236.0/24 | ————
183.219.238.0/23 | ————
183.219.246.0/23 | ————
183.219.248.0/21 | ————
211.141.80.0/23 | ————
211.141.82.0/24 | ————
211.141.98.0/23 | ————
211.141.100.0/22 | ————
211.141.105.0/24 | ————
211.141.107.0/24 | ————
211.141.108.0/23 | ————
211.141.111.0/24 | ————
211.141.112.0/21 | ————
211.141.120.0/23 | ————
211.141.124.0/22 | ————
211.141.128.0/20 | ————
211.141.144.0/22 | ————
211.141.148.0/23 | ————
211.141.150.0/24 | ————
211.141.153.0/24 | ————
211.141.154.0/23 | ————
211.141.156.0/23 | ————
211.141.159.0/24 | ————
218.204.64.0/21 | ————
218.204.73.0/24 | ————
218.204.74.0/23 | ————
218.204.76.0/23 | ————
218.204.78.0/24 | ————
218.204.81.0/24 | ————
218.204.83.0/24 | ————
218.204.85.0/24 | ————
218.204.86.0/24 | ————
218.204.88.0/23 | ————
218.204.90.0/24 | ————
218.204.92.0/22 | ————
218.204.97.0/24 | ————
218.204.98.0/23 | ————
218.204.100.0/22 | ————
218.204.104.0/21 | ————
218.204.112.0/22 | ————
218.204.117.0/24 | ————
218.204.118.0/23 | ————
218.204.120.0/22 | ————
218.204.125.0/24 | ————
218.204.126.0/23 | ————
218.204.131.0/24 | ————
218.204.138.0/23 | ————
218.204.140.0/22 | ————
218.204.144.0/23 | ————
218.204.146.0/24 | ————
218.204.148.0/22 | ————
218.204.152.0/22 | ————
218.204.156.0/23 | ————
218.204.159.0/24 | ————
223.82.0.0/17 | ————
223.82.138.0/23 | ————
223.82.140.0/22 | ————
223.82.144.0/20 | ————
223.82.160.0/23 | ————
223.82.162.0/24 | ————
223.82.164.0/22 | ————
223.82.168.0/21 | ————
223.82.176.0/21 | ————
223.82.185.0/24 | ————
223.82.186.0/23 | ————
223.82.188.0/22 | ————
223.82.192.0/20 | ————
223.82.208.0/21 | ————
223.82.216.0/23 | ————
223.82.222.0/23 | ————
223.82.228.0/22 | ————
223.82.232.0/21 | ————
223.82.240.0/22 | ————
223.83.0.0/20 | ————
223.83.16.0/23 | ————
223.83.24.0/21 | ————
223.83.32.0/19 | ————
223.83.64.0/19 | ————
223.83.96.0/20 | ————
223.83.114.0/23 | ————
223.83.120.0/23 | ————
223.83.124.0/22 | ————
223.83.128.0/18 | ————
223.83.192.0/19 | ————
223.83.224.0/20 | ————
223.83.240.0/21 | ————
223.83.248.0/22 | ————
223.84.2.0/23 | ————
223.84.4.0/22 | ————
223.84.8.0/21 | ————
223.84.16.0/20 | ————
223.84.32.0/20 | ————
223.84.48.0/21 | ————
223.84.56.0/24 | ————
223.84.60.0/23 | ————
223.84.62.0/24 | ————
223.84.64.0/20 | ————
223.84.80.0/21 | ————
223.84.88.0/22 | ————
223.84.96.0/19 | ————
223.84.128.0/20 | ————
223.84.144.0/24 | ————
223.84.146.0/24 | ————
223.84.153.0/24 | ————
223.84.159.0/24 | ————
223.84.160.0/19 | ————
223.84.192.0/18 | ————
——————————————————————+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+
2409:8038:810::/44 | ————
2409:8038:820::/43 | ————
2409:8038:840::/43 | ————
2409:8038:870::/44 | ————
2409:8038:880::/42 | ————
2409:8038:1010::/44 | ————
2409:8038:1020::/43 | ————
2409:8038:1040::/43 | ————
2409:8038:1070::/44 | ————
2409:8038:1080::/42 | ————
2409:8038:3920::/43 | ————
2409:8038:3940::/44 | ————
2409:8038:3950::/48 | ————
2409:8038:3970::/48 | ————
2409:8087:3810::/44 | ————
2409:8087:3820::/43 | ————
2409:8087:3840::/43 | ————
2409:8087:3870::/44 | ————
2409:8087:3880::/42 | ————
2409:8738::/33 | ————
2409:8738:8000::/36 | ————
2409:8738:9000::/37 | ————
2409:8738:b200::/39 | ————
2409:8738:b400::/38 | ————
2409:8738:b800::/37 | ————
2409:8738:c000::/37 | ————
2409:8938::/36 | ————
2409:8938:1000::/40 | ————
2409:8938:1220::/46 | ————
2409:8938:1420::/46 | ————
2409:8938:1620::/46 | ————
2409:8938:1820::/46 | ————
2409:8938:1a00::/40 | ————
2409:8938:1c00::/38 | ————
2409:8938:2000::/36 | ————
2409:8938:3000::/37 | ————
2409:8938:3800::/38 | ————
2409:8938:3c00::/40 | ————
2409:8938:3e00::/40 | ————
2409:8938:4000::/40 | ————
2409:8938:4200::/40 | ————
2409:8938:4400::/38 | ————
2409:8938:4800::/37 | ————
2409:8938:5000::/36 | ————
2409:8938:6000::/35 | ————
2409:8938:8000::/36 | ————
2409:8938:9000::/37 | ————
2409:8938:9800::/43 | ————
2409:8938:9a00::/43 | ————
2409:8938:9c00::/43 | ————
2409:8938:9e00::/43 | ————
2409:8938:a000::/43 | ————
2409:8938:a200::/43 | ————
2409:8938:a400::/43 | ————
2409:8938:a600::/43 | ————
2409:8938:a800::/43 | ————
2409:8938:aa00::/43 | ————
2409:8938:ac00::/43 | ————
2409:8938:ae00::/43 | ————
2409:8938:b000::/43 | ————
2409:8938:b200::/40 | ————
2409:8938:b400::/38 | ————
2409:8938:b800::/37 | ————
2409:8938:c000::/38 | ————
2409:8a38::/33 | ————
2409:8a38:8000::/36 | ————
2409:8a38:9000::/37 | ————
2409:8a38:b200::/39 | ————
2409:8a38:b400::/38 | ————
2409:8a38:b800::/37 | ————
2409:8a38:c000::/37 | ————
2409:8b38:1200::/39 | ————
2409:8b38:1400::/38 | ————
2409:8b38:1800::/39 | ————
2409:8b38:2400::/38 | ————
2409:8b38:2800::/37 | ————
2409:8b38:3000::/37 | ————
2409:8b38:3800::/38 | ————
2409:8b38:3c00::/39 | ————
2409:8b38:8000::/36 | ————
2409:8b38:9000::/37 | ————
2409:8c38:1a00::/48 | ————
2409:8c39:2000::/44 | ————
2409:8c39:3000::/44 | ————
2409:8c39:4000::/44 | ————
2409:8c39:5000::/44 | ————
2409:8c39:7000::/44 | ————
——————————————————————+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+——‒+
Month |Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Year |20232024 2025