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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
177.69.127.x/242025-07-02 15:54:50 GMTblockedblocked
177.69.142.x/242025-05-29 12:35:42 GMTreceivedreceived
177.69.236.x/242026-01-26 18:42:15 GMTrewrittenrewritten
179.108.116.x/242025-05-05 21:59:33 GMTrewrittenreceived
187.32.124.x/242025-05-07 22:27:36 GMTrewrittenreceived
200.233.192.x/242025-11-29 21:07:24 GMTblockedblocked
201.48.165.x/242026-01-09 18:44:58 GMTblockedblocked
2001:1291:xx::/402025-05-29 12:35:42 GMTreceivedreceived
2804:808:xx::/402025-05-23 11:29:21 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
262779bra (Brazil)30AS 262779 testsreceived
262691bra (Brazil)121AS 262691 testsreceived
262812bra (Brazil)197AS 262812 testsreceived
262757bra (Brazil)20AS 262757 testsblocked
263285bra (Brazil)20AS 263285 testsblocked
267266bra (Brazil)20AS 267266 testsblocked
273514bra (Brazil)20AS 273514 testsblocked
52930bra (Brazil)30AS 52930 testsblocked
265279bra (Brazil)40AS 265279 testsblocked
28352bra (Brazil)166AS 28352 testsblocked
263087bra (Brazil)1910AS 263087 testsblocked
263569bra (Brazil)387AS 263569 testsblocked
28171bra (Brazil)5112AS 28171 testsblocked
27715bra (Brazil)586AS 27715 testsblocked
28573bra (Brazil)4010AS 28573 testsblocked
61599bra (Brazil)838234AS 61599 testsblocked
52573bra (Brazil)848242AS 52573 testsblocked
53062bra (Brazil)44071241AS 53062 testsblocked

Address Space Announcement History

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

Last Modified