Spoofing Information for AS 4538 (ERX-CERNET-BKB)

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
58.206.199.x/242024-01-11 07:15:17 GMTblockedreceived
166.111.83.x/242023-06-14 08:47:28 GMTrewrittenrewritten
183.172.126.x/242024-03-16 10:00:44 GMTblockedblocked
183.173.20.x/242023-05-24 05:23:55 GMTblockedblocked
202.120.234.x/242024-05-17 14:00:04 GMTblockedblocked
210.39.1.x/242023-10-15 11:58:25 GMTblockedblocked
2001:250:2xx::/402024-05-17 08:15:33 GMTblockedblocked
2001:da8:2dxx::/402023-12-01 12:05:07 GMTblockedblocked
2001:da8:e8xx::/402024-05-16 11:44:43 GMTblockedblocked

Address Space Announcement History

The customer cone for 4538 is too large for a prefix list to be useful.

Last Modified