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Spoofing Information for AS 2497 (IIJ)

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
125.30.0.x/242022-06-14 23:41:06 GMTblockedblocked
125.30.3.x/242023-02-25 04:55:53 GMTblockedblocked
125.30.4.x/242022-07-01 06:59:07 GMTblockedblocked
125.30.48.x/242023-02-06 04:56:37 GMTblockedblocked
125.30.49.x/242022-12-29 00:10:16 GMTblockedblocked
125.30.50.x/242023-06-01 07:48:10 GMTblockedblocked
133.159.148.x/242023-06-02 02:55:40 GMTrewrittenrewritten
150.31.26.x/242022-12-28 07:36:27 GMTblockedblocked
150.31.27.x/242023-02-26 01:28:55 GMTblockedblocked
160.13.84.x/242023-01-08 05:37:59 GMTblockedblocked
160.13.102.x/242022-12-12 16:31:07 GMTblockedblocked
160.13.104.x/242023-02-12 07:18:15 GMTblockedblocked
160.13.149.x/242023-02-05 06:32:56 GMTblockedblocked
160.13.222.x/242023-01-29 00:35:11 GMTblockedblocked
202.232.134.x/242023-06-07 02:17:53 GMTblockedblocked

Customers of AS 2497 we have spoofer tests from

This is the list of directly connected customers of AS 2497 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
2907 (SINET-AS)jpn (Japan)782115AS 2907 testsreceived
8674 (NETNOD-IX)swe (Sweden)13324AS 8674 testsblocked
55391 (MF-NATIVE6-E)jpn (Japan)2418AS 55391 testsblocked
54825 (PACKET)usa (United States)131634AS 54825 testsblocked
54825 (PACKET)usa (United States)131634AS 54825 testsblocked
2519 (VECTANT)jpn (Japan)1360131AS 2519 testsblocked

Address Space Announcement History

The customer cone for 2497 is too large for a prefix list to be useful.

Last Modified