Spoofing Information for AS 20473 (AS-CHOOPA)

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
45.76.217.x/242024-03-20 19:10:37 GMTblockedblocked
45.76.232.x/242024-05-02 00:39:50 GMTrewrittenrewritten
45.77.92.x/242024-03-26 11:06:06 GMTblockedblocked
65.20.75.x/242023-07-19 16:10:40 GMTblockedblocked
66.55.149.x/242024-04-25 21:15:41 GMTblockedblocked
66.135.4.x/242024-02-22 21:33:45 GMTblockedblocked
95.179.249.x/242023-11-13 07:58:26 GMTblockedblocked
198.13.44.x/242023-06-16 02:45:10 GMTblockedblocked
216.238.71.x/242023-12-03 21:18:27 GMTblockedblocked
2001:19f0:70xx::/402024-03-20 19:10:37 GMTblockedblocked
2401:c080:24xx::/402023-07-19 16:10:40 GMTblockedblocked

Customers of AS 20473 we have spoofer tests from

This is the list of directly connected customers of AS 20473 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
263010bra (Brazil)80AS 263010 testsreceived
200182usa (United States)50AS 200182 testsblocked
8038 (6CONNECT)usa (United States)180AS 8038 testsblocked
46997 (NATOLAB)usa (United States)612AS 46997 testsblocked
25820 (IT7NET)usa (United States)1020AS 25820 testsblocked

Address Space Announcement History

The customer cone for 20473 is too large for a prefix list to be useful.

Last Modified