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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
179.68.194.x/242024-07-25 16:09:43 GMTrewrittenrewritten
179.68.195.x/242024-07-06 17:41:13 GMTblockedblocked
179.68.211.x/242024-07-01 12:57:39 GMTblockedblocked
179.68.212.x/242024-06-24 21:58:25 GMTblockedblocked
187.43.129.x/242024-04-28 17:16:15 GMTblockedblocked
187.43.131.x/242024-03-18 13:03:10 GMTrewrittenrewritten
187.43.140.x/242024-04-10 18:09:51 GMTblockedblocked
187.43.141.x/242024-03-28 20:45:41 GMTblockedblocked
187.43.143.x/242024-04-02 20:51:35 GMTrewrittenrewritten
187.43.147.x/242024-02-29 14:52:31 GMTrewrittenrewritten
187.43.154.x/242024-08-09 17:26:05 GMTrewrittenrewritten
187.43.161.x/242024-07-08 11:53:56 GMTrewrittenrewritten
187.43.170.x/242024-11-11 14:12:05 GMTrewrittenrewritten
187.43.172.x/242024-01-05 19:47:30 GMTblockedblocked
187.43.173.x/242024-07-17 12:55:46 GMTrewrittenrewritten
187.43.178.x/242024-07-09 14:28:23 GMTrewrittenrewritten
187.43.180.x/242024-10-05 13:32:56 GMTrewrittenrewritten
187.43.184.x/242024-08-08 11:48:50 GMTrewrittenrewritten
187.43.191.x/242024-07-12 14:11:28 GMTrewrittenrewritten
187.43.192.x/242024-06-27 12:20:17 GMTrewrittenrewritten
187.43.197.x/242024-08-29 12:57:45 GMTrewrittenrewritten
187.43.199.x/242024-08-21 18:01:05 GMTrewrittenrewritten
187.43.200.x/242024-07-07 17:15:14 GMTrewrittenrewritten
187.43.204.x/242024-08-23 20:58:33 GMTrewrittenrewritten
187.43.215.x/242024-09-09 17:47:38 GMTrewrittenrewritten
187.43.222.x/242024-05-28 12:41:00 GMTrewrittenrewritten
189.2.193.x/242024-07-24 18:02:12 GMTblockedblocked
191.38.209.x/242024-08-29 12:50:30 GMTrewrittenrewritten
191.38.216.x/242024-11-19 10:46:59 GMTrewrittenrewritten
191.38.218.x/242024-11-20 10:19:56 GMTrewrittenrewritten
191.39.72.x/242024-08-21 16:43:34 GMTrewrittenrewritten
191.39.139.x/242024-10-09 19:35:30 GMTblockedblocked
191.39.141.x/242024-06-13 15:40:58 GMTblockedblocked
191.39.142.x/242024-04-02 14:19:10 GMTrewrittenrewritten
191.39.149.x/242024-07-18 21:39:25 GMTblockedblocked
191.39.151.x/242024-09-17 17:13:59 GMTblockedblocked
191.39.159.x/242024-04-23 20:35:31 GMTrewrittenrewritten
191.56.133.x/242024-10-08 17:23:41 GMTrewrittenrewritten
191.56.134.x/242024-08-05 17:49:42 GMTrewrittenrewritten
191.56.140.x/242024-11-13 12:04:38 GMTrewrittenrewritten
191.56.144.x/242024-01-14 18:26:00 GMTrewrittenrewritten
191.56.145.x/242023-12-20 15:19:15 GMTrewrittenrewritten
191.56.146.x/242024-04-30 12:59:36 GMTrewrittenrewritten
191.56.147.x/242024-09-11 12:09:32 GMTrewrittenrewritten
191.56.148.x/242024-09-10 14:32:09 GMTrewrittenrewritten
191.56.149.x/242024-10-15 18:55:35 GMTrewrittenrewritten
191.56.151.x/242024-10-30 12:10:31 GMTrewrittenrewritten
191.56.235.x/242024-08-07 21:46:16 GMTrewrittenrewritten
191.56.240.x/242024-07-11 14:50:59 GMTrewrittenrewritten
191.56.242.x/242024-07-11 20:13:20 GMTrewrittenrewritten
191.56.246.x/242023-12-01 00:06:31 GMTrewrittenrewritten
191.56.247.x/242024-04-27 19:00:03 GMTrewrittenrewritten
191.56.250.x/242024-08-12 18:56:19 GMTrewrittenrewritten
191.56.253.x/242024-11-07 14:08:39 GMTrewrittenrewritten
191.57.1.x/242024-04-06 10:12:55 GMTblockedblocked
191.57.8.x/242024-11-18 10:30:34 GMTrewrittenrewritten
191.57.13.x/242024-04-06 09:46:31 GMTblockedblocked
191.57.14.x/242024-08-03 00:30:04 GMTblockedblocked
191.57.21.x/242024-08-03 00:05:49 GMTblockedblocked
191.57.24.x/242024-11-18 10:54:50 GMTrewrittenrewritten
191.57.26.x/242024-10-24 18:52:42 GMTrewrittenrewritten
191.57.161.x/242023-12-07 17:24:05 GMTrewrittenrewritten
191.57.168.x/242024-10-11 18:36:16 GMTrewrittenrewritten
191.57.176.x/242024-06-10 12:59:30 GMTrewrittenrewritten
191.57.179.x/242024-07-02 23:01:18 GMTrewrittenrewritten
191.57.183.x/242023-12-15 12:27:03 GMTrewrittenrewritten
191.57.187.x/242024-06-07 21:45:41 GMTrewrittenrewritten
191.57.190.x/242024-09-24 16:26:42 GMTblockedblocked
191.58.64.x/242023-12-20 14:41:12 GMTrewrittenrewritten
191.58.66.x/242024-08-27 21:43:49 GMTrewrittenrewritten
191.58.68.x/242024-05-27 23:44:54 GMTrewrittenrewritten
191.58.70.x/242024-02-14 21:52:55 GMTrewrittenrewritten
191.58.82.x/242024-08-02 16:26:28 GMTrewrittenrewritten
191.58.101.x/242024-09-18 22:33:29 GMTrewrittenrewritten
191.58.102.x/242024-09-25 17:54:29 GMTrewrittenrewritten
191.58.108.x/242023-12-27 16:20:33 GMTrewrittenrewritten
191.58.122.x/242024-09-19 19:56:36 GMTrewrittenrewritten
191.58.123.x/242024-10-31 19:12:52 GMTrewrittenrewritten
191.58.133.x/242024-08-09 18:37:33 GMTblockedblocked
191.58.134.x/242024-10-19 13:16:21 GMTrewrittenrewritten
191.58.136.x/242024-08-14 21:32:19 GMTrewrittenrewritten
191.58.142.x/242024-06-26 18:07:11 GMTrewrittenrewritten
191.58.151.x/242024-07-19 12:59:37 GMTblockedblocked
191.58.157.x/242024-08-10 00:47:41 GMTblockedblocked
191.58.158.x/242024-10-16 07:36:42 GMTrewrittenrewritten
191.59.97.x/242024-08-02 15:57:15 GMTrewrittenrewritten
191.59.104.x/242024-06-05 13:19:57 GMTrewrittenrewritten
191.59.108.x/242024-05-22 12:22:44 GMTrewrittenrewritten
191.59.109.x/242024-08-29 12:25:37 GMTrewrittenrewritten
191.59.124.x/242024-08-26 14:55:21 GMTrewrittenrewritten
191.59.125.x/242024-09-16 22:01:11 GMTblockedblocked
200.166.35.x/242024-10-08 13:00:56 GMTrewrittenrewritten
200.166.195.x/242023-12-03 20:06:01 GMTblockedblocked
200.173.48.x/242024-06-05 20:28:41 GMTrewrittenrewritten
200.173.49.x/242024-03-21 14:13:10 GMTrewrittenrewritten
200.173.84.x/242023-12-04 12:14:01 GMTrewrittenrewritten
200.173.85.x/242024-06-13 20:20:57 GMTrewrittenrewritten
200.173.124.x/242024-08-21 21:28:40 GMTrewrittenrewritten
200.173.125.x/242024-08-21 13:01:23 GMTrewrittenrewritten
200.173.126.x/242024-11-06 07:45:51 GMTrewrittenrewritten
200.173.180.x/242024-06-13 19:07:23 GMTrewrittenrewritten
200.173.181.x/242024-10-31 16:22:05 GMTrewrittenrewritten
200.173.212.x/242024-08-21 13:09:57 GMTrewrittenrewritten
200.173.214.x/242024-08-21 21:49:16 GMTrewrittenrewritten
200.173.215.x/242023-12-04 16:51:14 GMTrewrittenrewritten
200.173.224.x/242023-12-14 13:06:02 GMTrewrittenrewritten
200.173.233.x/242024-01-17 11:10:23 GMTrewrittenrewritten
200.173.241.x/242024-02-14 12:50:38 GMTrewrittenrewritten
200.173.245.x/242024-02-09 14:58:49 GMTrewrittenrewritten
200.173.249.x/242024-03-18 20:18:03 GMTrewrittenrewritten
200.178.84.x/242024-04-15 16:24:49 GMTblockedblocked
200.213.107.x/242024-03-05 14:17:33 GMTblockedblocked
200.242.165.x/242024-01-15 14:22:14 GMTblockedblocked
200.250.59.x/242024-03-13 12:55:30 GMTblockedblocked
200.254.159.x/242024-11-13 11:57:08 GMTrewrittenreceived
201.30.238.x/242024-07-30 12:24:58 GMTrewrittenblocked
201.72.251.x/242024-01-14 21:36:46 GMTrewrittenrewritten

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
267123bra (Brazil)20AS 267123 testsreceived
264116bra (Brazil)61AS 264116 testsreceived
52956bra (Brazil)71AS 52956 testsreceived
61588bra (Brazil)4712AS 61588 testsreceived
28587bra (Brazil)20AS 28587 testsblocked
268437bra (Brazil)31AS 268437 testsblocked
266168bra (Brazil)93AS 266168 testsblocked
22085bra (Brazil)100AS 22085 testsblocked
263661bra (Brazil)3212AS 263661 testsblocked
52771bra (Brazil)7424AS 52771 testsblocked
61745bra (Brazil)12644AS 61745 testsblocked
23106bra (Brazil)833299AS 23106 testsblocked
266445bra (Brazil)148381AS 266445 testsblocked
28573bra (Brazil)16352AS 28573 testsblocked

Address Space Announcement History

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

Last Modified