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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
179.68.106.x/242025-12-13 23:57:25 GMTblockedblocked
179.68.109.x/242026-02-03 18:47:44 GMTrewrittenrewritten
179.68.119.x/242026-01-23 22:31:53 GMTblockedblocked
179.68.122.x/242025-09-05 22:49:56 GMTblockedblocked
179.68.126.x/242026-03-18 14:40:20 GMTrewrittenrewritten
179.68.192.x/242025-07-17 00:45:27 GMTblockedblocked
179.68.200.x/242025-06-26 21:16:02 GMTblockedblocked
179.68.210.x/242025-07-01 16:21:54 GMTblockedblocked
179.68.212.x/242025-06-18 23:04:49 GMTblockedblocked
179.68.221.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
187.43.163.x/242026-02-01 20:01:34 GMTblockedblocked
187.43.165.x/242025-09-08 21:04:31 GMTrewrittenrewritten
187.43.167.x/242026-04-14 21:24:13 GMTrewrittenrewritten
187.43.175.x/242025-12-27 15:09:05 GMTblockedblocked
187.43.190.x/242026-01-11 20:32:08 GMTblockedblocked
187.43.194.x/242025-04-24 23:19:52 GMTblockedblocked
187.43.197.x/242025-07-25 18:20:47 GMTrewrittenrewritten
187.43.203.x/242026-04-20 10:57:48 GMTrewrittenrewritten
187.43.210.x/242026-01-12 19:00:29 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
187.43.219.x/242025-06-26 17:14:57 GMTblockedblocked
187.43.221.x/242025-10-18 21:48:18 GMTrewrittenrewritten
187.43.223.x/242026-04-06 15:05:35 GMTrewrittenrewritten
189.16.81.x/242026-03-31 17:15:53 GMTrewrittenreceived
191.38.61.x/242025-09-15 21:43:29 GMTrewrittenrewritten
191.38.192.x/242025-07-21 12:32:03 GMTrewrittenrewritten
191.38.193.x/242026-02-16 19:38:34 GMTrewrittenrewritten
191.38.194.x/242025-09-12 11:50:36 GMTrewrittenrewritten
191.38.196.x/242025-08-14 20:01:44 GMTrewrittenrewritten
191.38.232.x/242025-12-17 18:36:05 GMTrewrittenrewritten
191.38.246.x/242026-04-07 20:56:26 GMTrewrittenrewritten
191.38.247.x/242026-01-16 17:15:29 GMTrewrittenrewritten
191.39.148.x/242025-05-05 15:30:09 GMTblockedblocked
191.56.135.x/242026-02-24 19:05:14 GMTrewrittenrewritten
191.56.147.x/242026-04-08 12:32:04 GMTrewrittenrewritten
191.56.148.x/242026-02-12 13:56:25 GMTrewrittenrewritten
191.56.149.x/242026-04-20 19:25:25 GMTrewrittenrewritten
191.56.150.x/242025-12-05 11:38:20 GMTrewrittenrewritten
191.56.154.x/242025-06-26 18:57:51 GMTrewrittenrewritten
191.56.240.x/242026-01-19 16:08:56 GMTrewrittenrewritten
191.56.243.x/242026-01-20 17:33:05 GMTrewrittenrewritten
191.56.248.x/242026-04-10 21:01:52 GMTrewrittenrewritten
191.56.249.x/242026-02-04 05:46:29 GMTrewrittenrewritten
191.56.250.x/242025-12-10 12:26:37 GMTrewrittenrewritten
191.56.252.x/242026-01-30 14:42:49 GMTrewrittenrewritten
191.57.4.x/242025-06-11 22:08:49 GMTblockedblocked
191.57.8.x/242025-12-19 11:40:28 GMTblockedblocked
191.57.9.x/242025-09-11 19:57:58 GMTblockedblocked
191.57.13.x/242026-01-17 17:10:00 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/242026-01-18 13:23:34 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 GMTblockedblocked
191.58.65.x/242026-03-04 14:59:11 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
191.58.87.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
191.58.159.x/242026-03-15 17:06:39 GMTblockedblocked
191.59.102.x/242026-01-19 19:07:19 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/242026-02-24 12:57:14 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 GMTblockedblocked
191.59.121.x/242026-01-28 18:33:49 GMTrewrittenrewritten
191.59.125.x/242025-10-09 10:59:54 GMTblockedblocked
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
200.173.205.x/242026-02-26 16:01:01 GMTrewrittenrewritten
200.173.212.x/242026-04-17 14:48:17 GMTrewrittenrewritten
200.192.10.x/242026-03-12 21:11:56 GMTblockedblocked
200.192.13.x/242026-02-27 01:35:58 GMTblockedblocked
200.192.19.x/242026-04-01 22:08:54 GMTblockedblocked
200.192.24.x/242026-02-28 14:03:03 GMTblockedblocked
200.247.68.x/242025-08-12 12:16:58 GMTblockedblocked
201.30.238.x/242025-12-09 14:11:31 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)50AS 267028 testsreceived
52956bra (Brazil)60AS 52956 testsreceived
61588bra (Brazil)5111AS 61588 testsreceived
28587bra (Brazil)20AS 28587 testsblocked
262757bra (Brazil)20AS 262757 testsblocked
269180bra (Brazil)51AS 269180 testsblocked
52771bra (Brazil)3312AS 52771 testsblocked
22085bra (Brazil)570AS 22085 testsblocked
28573bra (Brazil)4010AS 28573 testsblocked

Address Space Announcement History

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

Last Modified