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Spoofing Information for AS 4230

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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
179.68.100.x/242025-10-24 15:27:46 GMTrewrittenrewritten
179.68.105.x/242025-09-30 00:29:31 GMTblockedblocked
179.68.122.x/242025-09-05 22:49:56 GMTblockedblocked
179.68.192.x/242025-07-17 00:45:27 GMTblockedblocked
179.68.200.x/242025-06-26 21:16:02 GMTblockedblocked
179.68.209.x/242025-03-13 19:51:23 GMTblockedblocked
179.68.210.x/242025-07-01 16:21:54 GMTblockedblocked
179.68.212.x/242025-06-18 23:04:49 GMTblockedblocked
179.68.219.x/242025-04-11 12:47:55 GMTblockedblocked
179.68.221.x/242025-07-07 14:23:02 GMTblockedblocked
179.68.223.x/242025-04-29 15:51:05 GMTblockedblocked
187.43.132.x/242025-06-26 20:33:33 GMTblockedblocked
187.43.162.x/242025-03-09 14:14:36 GMTrewrittenrewritten
187.43.165.x/242025-09-08 21:04:31 GMTrewrittenrewritten
187.43.174.x/242024-12-20 00:28:29 GMTblockedblocked
187.43.181.x/242025-01-02 12:57:23 GMTblockedblocked
187.43.184.x/242025-03-22 14:01:25 GMTrewrittenrewritten
187.43.185.x/242025-02-22 13:46:14 GMTrewrittenrewritten
187.43.194.x/242025-04-24 23:19:52 GMTblockedblocked
187.43.197.x/242025-07-25 18:20:47 GMTrewrittenrewritten
187.43.212.x/242025-03-19 19:22:56 GMTrewrittenrewritten
187.43.214.x/242025-12-02 15:20:47 GMTblockedblocked
187.43.215.x/242025-08-04 22:26:40 GMTblockedblocked
187.43.216.x/242025-07-16 00:07:30 GMTrewrittenrewritten
187.43.218.x/242025-03-18 12:08:01 GMTrewrittenrewritten
187.43.219.x/242025-06-26 17:14:57 GMTblockedblocked
187.43.221.x/242025-10-18 21:48:18 GMTrewrittenrewritten
189.16.81.x/242025-04-17 19:57:57 GMTblockedblocked
191.38.61.x/242025-09-15 21:43:29 GMTrewrittenrewritten
191.38.192.x/242025-07-21 12:32:03 GMTrewrittenrewritten
191.38.194.x/242025-09-12 11:50:36 GMTrewrittenrewritten
191.38.196.x/242025-08-14 20:01:44 GMTrewrittenrewritten
191.38.219.x/242024-12-19 02:15:33 GMTrewrittenrewritten
191.38.247.x/242025-09-05 17:36:06 GMTrewrittenrewritten
191.39.71.x/242025-03-04 23:28:33 GMTrewrittenrewritten
191.39.148.x/242025-05-05 15:30:09 GMTblockedblocked
191.39.158.x/242024-12-20 18:46:35 GMTblockedblocked
191.56.130.x/242025-01-19 15:15:30 GMTrewrittenrewritten
191.56.144.x/242025-03-29 05:28:14 GMTrewrittenrewritten
191.56.147.x/242025-12-01 12:16:02 GMTrewrittenrewritten
191.56.150.x/242025-12-05 11:38:20 GMTrewrittenrewritten
191.56.154.x/242025-06-26 18:57:51 GMTrewrittenrewritten
191.56.155.x/242024-12-10 16:11:28 GMTrewrittenrewritten
191.56.240.x/242025-09-10 22:25:33 GMTrewrittenrewritten
191.57.4.x/242025-06-11 22:08:49 GMTblockedblocked
191.57.9.x/242025-09-11 19:57:58 GMTblockedblocked
191.57.14.x/242025-10-08 16:39:17 GMTblockedblocked
191.57.17.x/242025-10-17 00:06:40 GMTblockedblocked
191.57.18.x/242025-09-26 20:16:52 GMTblockedblocked
191.57.19.x/242025-06-11 23:38:41 GMTblockedblocked
191.57.20.x/242025-07-02 12:35:54 GMTblockedblocked
191.57.24.x/242025-05-19 22:35:39 GMTrewrittenrewritten
191.57.26.x/242025-10-24 14:14:46 GMTrewrittenrewritten
191.57.27.x/242024-12-12 23:19:38 GMTrewrittenrewritten
191.57.29.x/242025-03-04 13:14:13 GMTblockedblocked
191.58.64.x/242025-04-03 18:38:57 GMTrewrittenrewritten
191.58.68.x/242025-07-29 00:15:37 GMTrewrittenrewritten
191.58.71.x/242025-08-06 21:27:23 GMTrewrittenrewritten
191.58.78.x/242025-08-29 15:39:05 GMTrewrittenrewritten
191.58.86.x/242025-04-16 11:31:26 GMTrewrittenrewritten
191.58.87.x/242025-04-27 14:38:13 GMTrewrittenrewritten
191.58.88.x/242025-10-04 22:33:17 GMTrewrittenrewritten
191.58.89.x/242025-05-20 17:29:48 GMTrewrittenrewritten
191.58.99.x/242025-06-06 10:48:39 GMTrewrittenrewritten
191.58.101.x/242025-06-06 13:39:01 GMTrewrittenrewritten
191.58.110.x/242025-09-02 20:05:08 GMTrewrittenrewritten
191.58.122.x/242025-11-26 20:22:13 GMTrewrittenrewritten
191.58.124.x/242025-08-19 17:24:06 GMTrewrittenrewritten
191.58.125.x/242025-07-24 11:42:55 GMTrewrittenrewritten
191.58.126.x/242025-07-11 12:03:59 GMTrewrittenrewritten
191.58.128.x/242025-11-18 19:36:35 GMTblockedblocked
191.58.131.x/242025-06-26 19:29:19 GMTblockedblocked
191.58.134.x/242025-10-13 22:34:34 GMTrewrittenrewritten
191.58.135.x/242025-12-05 21:00:12 GMTrewrittenrewritten
191.58.139.x/242025-09-16 15:43:41 GMTblockedblocked
191.58.150.x/242025-05-01 11:38:46 GMTblockedblocked
191.58.154.x/242025-06-23 21:49:21 GMTrewrittenrewritten
191.59.103.x/242025-09-23 19:13:11 GMTblockedblocked
191.59.105.x/242025-07-02 17:36:34 GMTrewrittenrewritten
191.59.111.x/242025-05-07 12:24:02 GMTrewrittenrewritten
191.59.112.x/242025-08-02 19:08:17 GMTrewrittenrewritten
191.59.113.x/242025-05-29 19:32:46 GMTrewrittenrewritten
191.59.116.x/242025-08-25 13:42:19 GMTrewrittenrewritten
191.59.118.x/242025-07-31 13:25:15 GMTrewrittenrewritten
191.59.121.x/242025-10-18 21:27:54 GMTrewrittenrewritten
191.59.125.x/242025-10-09 10:59:54 GMTblockedblocked
200.173.84.x/242025-01-22 11:44:16 GMTrewrittenrewritten
200.173.124.x/242025-06-04 12:29:37 GMTrewrittenrewritten
200.173.126.x/242025-11-12 18:29:39 GMTrewrittenrewritten
200.173.160.x/242025-06-26 00:10:37 GMTrewrittenrewritten
200.173.212.x/242025-05-06 19:54:56 GMTrewrittenrewritten
200.173.214.x/242025-02-20 18:58:59 GMTrewrittenrewritten
200.212.80.x/242025-03-21 15:08:58 GMTblockedblocked
200.247.68.x/242025-08-12 12:16:58 GMTblockedblocked
201.30.238.x/242025-12-01 20:07:30 GMTrewrittenblocked

Customers of AS 4230 we have spoofer tests from

This is the list of directly connected customers of AS 4230 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
267028bra (Brazil)51AS 267028 testsreceived
52956bra (Brazil)81AS 52956 testsreceived
61588bra (Brazil)5012AS 61588 testsreceived
262663bra (Brazil)5910AS 262663 testsreceived
28624bra (Brazil)18045AS 28624 testsreceived
28587bra (Brazil)20AS 28587 testsblocked
269180bra (Brazil)41AS 269180 testsblocked
263422bra (Brazil)62AS 263422 testsblocked
52771bra (Brazil)279AS 52771 testsblocked
22085bra (Brazil)540AS 22085 testsblocked
17222bra (Brazil)29778AS 17222 testsblocked
28573bra (Brazil)28912AS 28573 testsblocked
37468 (ANGOLA-CABLES)ago (Angola)13920717440AS 37468 testsblocked

Address Space Announcement History

The customer cone for 4230 is too large for a prefix list to be useful.

Last Modified