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Spoofing Information for AS 6461 (ZAYO-6461)

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
207.235.139.x/242024-01-11 18:04:17 GMTrewrittenblocked

Customers of AS 6461 we have spoofer tests from

This is the list of directly connected customers of AS 6461 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
25853 (ELJY30540)usa (United States)352AS 25853 testsreceived
27364 (ACS-INTERNET)usa (United States)3611AS 27364 testsreceived
61461ven (Venezuela)5619AS 61461 testsreceived
33544 (WILINE)usa (United States)757AS 33544 testsreceived
4637 (ASN-TELSTRA-GLOBAL)hkg (Hong Kong)14974513785AS 4637 testsreceived
10745 (ARIN-ASH-CHA)usa (United States)40AS 10745 testsblocked
52075 (WIFIRST)fra (France)40AS 52075 testsblocked
11039 (GWU)usa (United States)50AS 11039 testsblocked
12876 (AS12876)nld (Netherlands)110AS 12876 testsblocked
8399 (SEWAN-FR)fra (France)300AS 8399 testsblocked
19165 (WEBPASS)usa (United States)431AS 19165 testsblocked
21928 (T-MOBILE-AS21928)usa (United States)452AS 21928 testsblocked
19318 (IS-AS-1)usa (United States)752AS 19318 testsblocked
5645 (TEKSAVVY)can (Canada)7711AS 5645 testsblocked
13285 (OPALTELECOM-AS)gbr (United Kingdom)12116AS 13285 testsblocked
46475 (LIMESTONENETWORKS)usa (United States)2637AS 46475 testsblocked
13213 (UK2NET-AS)gbr (United Kingdom)4869AS 13213 testsblocked
3737 (AS-PTD)usa (United States)136546AS 3737 testsblocked
812 (ROGERS-COMMUNICATIONS)can (Canada)199671079AS 812 testsblocked
9498 (BBIL-AP)ind (India)17894320655AS 9498 testsblocked

Address Space Announcement History

The customer cone for 6461 is too large for a prefix list to be useful.

Last Modified