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Spoofing Information for AS 53013

Spoofing status per IP block (all dates)

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
177.67.82.x/242018-08-06 10:06:59 GMTblockedblocked
177.67.85.x/242022-10-05 18:15:22 GMTrewrittenrewritten

Customers of AS 53013 we have spoofer tests from

This is the list of directly connected customers of AS 53013 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
265111bra (Brazil)20AS 265111 testsreceived
265234bra (Brazil)41AS 265234 testsreceived
266154bra (Brazil)51AS 266154 testsreceived
53153bra (Brazil)176AS 53153 testsreceived
266260bra (Brazil)20AS 266260 testsblocked
262546bra (Brazil)40AS 262546 testsblocked
28209bra (Brazil)51AS 28209 testsblocked
268551bra (Brazil)72AS 268551 testsblocked
266192bra (Brazil)93AS 266192 testsblocked
263445bra (Brazil)136AS 263445 testsblocked
28202bra (Brazil)15654AS 28202 testsblocked
28220bra (Brazil)32090AS 28220 testsblocked

Address Space Announcement History

The customer cone for 53013 is too large for a prefix list to be useful.

Last Modified