Spoofing Information for AS 852 (ASN852)

Spoofing status per IP block for last year of data

(Results for all dates also available.)
Spoof status key
receivedSpoofed packet was received.Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewrittenSpoofed packet was received, but the source address was changed en route.
blockedSpoofed packet was not received, but unspoofed packet was.
unknownNeither spoofed nor unspoofed packet was received.
IP blockLatest testSpoof
50.93.110.x/242023-06-01 12:52:02 GMTblockedreceived
50.99.175.x/242023-04-09 04:15:52 GMTblockedblocked
64.180.95.x/242022-08-11 13:50:41 GMTblockedblocked
75.157.199.x/242023-03-13 19:27:55 GMTrewrittenrewritten
99.199.2.x/242022-10-26 04:16:10 GMTrewrittenrewritten
99.199.157.x/242022-11-19 21:05:11 GMTrewrittenrewritten
142.59.64.x/242023-04-08 21:38:20 GMTrewrittenrewritten
142.169.16.x/242023-02-26 04:02:39 GMTrewrittenrewritten
142.169.78.x/242023-03-06 13:30:08 GMTblockedblocked
154.5.81.x/242022-08-09 03:50:07 GMTrewrittenrewritten
154.20.89.x/242023-01-12 22:52:03 GMTrewrittenrewritten
154.20.224.x/242022-08-25 00:07:29 GMTrewrittenrewritten
162.156.72.x/242023-02-15 04:08:17 GMTblockedblocked
162.156.77.x/242022-08-15 15:34:37 GMTrewrittenrewritten
162.156.81.x/242023-01-12 18:03:49 GMTrewrittenrewritten
162.156.83.x/242022-11-14 18:08:10 GMTrewrittenrewritten
162.157.173.x/242023-06-05 03:06:03 GMTblockedreceived
162.157.210.x/242023-06-08 22:38:12 GMTblockedblocked
172.218.207.x/242023-06-02 15:00:09 GMTrewrittenrewritten
172.219.80.x/242023-03-08 22:53:59 GMTblockedblocked
173.180.215.x/242023-01-19 22:51:04 GMTrewrittenrewritten
198.166.137.x/242023-06-07 00:09:49 GMTblockedblocked
205.250.145.x/242022-11-28 23:47:13 GMTrewrittenrewritten
205.250.146.x/242023-01-05 15:57:44 GMTrewrittenrewritten
207.216.24.x/242023-04-23 04:59:10 GMTrewrittenrewritten
207.219.216.x/242022-06-20 21:15:03 GMTblockedblocked
209.89.161.x/242023-01-27 01:27:13 GMTblockedreceived
209.171.85.x/242022-07-09 01:15:40 GMTrewrittenrewritten
2001:569:50xx::/402023-01-04 00:43:24 GMTblockedblocked
2001:569:51xx::/402023-01-12 20:15:18 GMTblockedblocked
2001:569:52xx::/402023-04-23 04:59:10 GMTblockedblocked
2001:569:72xx::/402022-06-11 22:13:11 GMTblockedblocked
2001:569:7dxx::/402023-01-12 18:03:49 GMTblockedblocked
2001:569:7fxx::/402023-06-02 15:00:09 GMTblockedblocked
2001:56a:6fxx::/402023-04-08 21:38:20 GMTblockedblocked
2001:56a:7dxx::/402023-06-05 03:06:03 GMTblockedblocked

Customers of AS 852 we have spoofer tests from

This is the list of directly connected customers of AS 852 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.

ASNCountryNumber of Prefixes
in Customer Cone
Number of ASes
in Customer Cone
15128 (COMWAVE-BGP-01)can (Canada)350AS 15128 testsblocked
271 (BCNET-AS)can (Canada)13719AS 271 testsblocked

Address Space Announcement History

The customer cone for 852 is too large for a prefix list to be useful.

Last Modified