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Spoofing Information for AS 6830 (LibertyGlobal)

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
37.228.204.x/242024-04-17 21:56:24 GMTblockedblocked
37.228.226.x/242024-08-11 10:25:49 GMTblockedblocked
37.228.230.x/242024-09-05 16:53:26 GMTblockedblocked
37.228.231.x/242024-08-29 15:46:41 GMTblockedblocked
37.228.236.x/242024-11-02 00:57:17 GMTblockedblocked
37.228.238.x/242024-10-25 23:50:44 GMTblockedblocked
37.228.239.x/242024-02-23 19:27:35 GMTblockedblocked
89.64.7.x/242024-08-12 16:30:47 GMTrewrittenrewritten
89.64.36.x/242024-02-19 20:49:10 GMTblockedblocked
89.64.85.x/242024-03-29 16:28:19 GMTblockedblocked
89.64.86.x/242024-03-14 11:16:04 GMTblockedblocked
89.64.93.x/242024-03-20 22:17:56 GMTblockedblocked
89.64.97.x/242024-03-16 16:57:37 GMTblockedblocked
89.64.121.x/242024-07-17 01:24:16 GMTblockedblocked
89.64.122.x/242024-05-07 17:42:16 GMTblockedblocked
89.65.125.x/242024-04-11 07:27:56 GMTblockedblocked
89.100.140.x/242024-09-18 09:37:39 GMTblockedblocked
89.101.105.x/242024-12-10 13:31:46 GMTblockedblocked
94.75.72.x/242024-07-29 09:32:22 GMTblockedblocked
94.75.100.x/242024-07-02 11:28:17 GMTblockedblocked
188.167.110.x/242024-12-30 18:43:56 GMTblockedblocked
213.134.162.x/242024-04-11 14:19:22 GMTblockedblocked
213.134.163.x/242024-08-03 06:30:16 GMTblockedblocked
213.134.168.x/242024-05-20 15:02:38 GMTblockedblocked
213.134.182.x/242024-05-27 19:42:02 GMTblockedblocked
213.134.188.x/242024-06-01 06:43:02 GMTblockedblocked
2a02:8084:28xx::/402024-08-14 08:36:18 GMTblockedblocked
2a02:8084:46xx::/402024-04-17 21:56:24 GMTblockedblocked
2a02:a310:82xx::/402024-03-20 22:17:56 GMTblockedblocked
2a02:a313:82xx::/402024-07-09 14:47:05 GMTblockedblocked
2a02:a318:4xx::/402024-08-12 16:30:47 GMTblockedblocked

Customers of AS 6830 we have spoofer tests from

This is the list of directly connected customers of AS 6830 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
34465 (SPV-AS)nld (Netherlands)28444AS 34465 testsreceived
207176 (OPENFIBER)nld (Netherlands)70AS 207176 testsblocked
15435 (KABELFOON)nld (Netherlands)361AS 15435 testsblocked
11878 (TZULO)usa (United States)686AS 11878 testsblocked
6848 (TELENET-AS)bel (Belgium)17725AS 6848 testsblocked
33915 (TNF-AS)nld (Netherlands)24125AS 33915 testsblocked
5089 (NTL)gbr (United Kingdom)34366AS 5089 testsblocked
1136 (KPN)nld (Netherlands)71046AS 1136 testsblocked
6730 (SUNRISE)che (Switzerland)1417310AS 6730 testsblocked
199524 (GCORE)rou (Romania)83641327AS 199524 testsblocked
34927 (iFog-GmbH)deu (Germany)842798557AS 34927 testsblocked

Address Space Announcement History

The customer cone for 6830 is too large for a prefix list to be useful.

Last Modified