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Spoofing Information for AS 16735

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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
Private		Spoof
Routable
177.69.142.x/242024-11-19 13:50:08 GMTreceivedreceived
177.126.104.x/242024-10-16 15:57:48 GMTrewrittenreceived
187.32.78.x/242024-03-06 09:47:19 GMTreceivedreceived
189.37.72.x/242024-05-14 13:09:00 GMTrewrittenrewritten
189.37.73.x/242024-05-19 21:27:26 GMTrewrittenrewritten
200.146.223.x/242024-11-21 07:58:14 GMTblockedblocked
201.48.222.x/242024-06-09 00:47:26 GMTrewrittenblocked
201.48.248.x/242024-04-29 21:56:46 GMTblockedblocked
201.55.121.x/242024-07-13 21:00:36 GMTblockedblocked
201.55.126.x/242024-04-30 21:07:13 GMTrewrittenreceived
2001:1291:xx::/402024-11-19 13:50:08 GMTreceivedreceived
2804:808:xx::/402024-10-17 14:12:59 GMTblockedblocked

Customers of AS 16735 we have spoofer tests from

This is the list of directly connected customers of AS 16735 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		Recent
tests		Spoof
Routable
262765bra (Brazil)123AS 262765 testsreceived
52794bra (Brazil)141AS 52794 testsreceived
14282bra (Brazil)17757AS 14282 testsreceived
40676 (AS40676)usa (United States)4330252AS 40676 testsreceived
262878bra (Brazil)20AS 262878 testsblocked
263285bra (Brazil)20AS 263285 testsblocked
269224bra (Brazil)20AS 269224 testsblocked
52930bra (Brazil)30AS 52930 testsblocked
262891bra (Brazil)40AS 262891 testsblocked
265279bra (Brazil)40AS 265279 testsblocked
266034bra (Brazil)41AS 266034 testsblocked
28358bra (Brazil)70AS 28358 testsblocked
262691bra (Brazil)121AS 262691 testsblocked
263329bra (Brazil)2110AS 263329 testsblocked
263569bra (Brazil)297AS 263569 testsblocked
28130bra (Brazil)3411AS 28130 testsblocked
262493bra (Brazil)15663AS 262493 testsblocked
28260bra (Brazil)356106AS 28260 testsblocked
268976bra (Brazil)132118AS 268976 testsblocked
262287bra (Brazil)390159AS 262287 testsblocked
13335 (CLOUDFLARENET)vnm (Vietnam)274992131AS 13335 testsblocked

Address Space Announcement History

The customer cone for 16735 is too large for a prefix list to be useful.

Last Modified