Logo

Spoofing Information for AS 4637 (ASN-TELSTRA-GLOBAL)

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 block
Latest test
Spoof
Private
Spoof
Routable
134.159.14.x/242025-02-14 01:26:39 GMTreceivedreceived

Customers of AS 4637 we have spoofer tests from

This is the list of directly connected customers of AS 4637 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.

ASN
Country
Number of Prefixes
in Customer Cone
Number of ASes
in Customer Cone
Recent
tests
Spoof
Routable
40676 (AS40676)usa (United States)4363242AS 40676 testsreceived
45758 (TTBP-AS-AP)tha (Thailand)7606472AS 45758 testsreceived
202053 (UPCLOUD)sgp (Singapore)270AS 202053 testsblocked
14061 (DIGITALOCEAN-ASN)ind (India)1982AS 14061 testsblocked
14061 (DIGITALOCEAN-ASN)ind (India)1982AS 14061 testsblocked
9500 (VODAFONE-TRANSIT-AS)nzl (New Zealand)49444AS 9500 testsblocked
16276 (OVH)fra (France)85090AS 16276 testsblocked
9269 (HKBN-AS-AP)hkg (Hong Kong)112288AS 9269 testsblocked
2519 (VECTANT)jpn (Japan)1256127AS 2519 testsblocked
9924 (TFN-TW)twn (Taiwan)141081AS 9924 testsblocked
4809 (CHINATELECOM-CORE-WAN-CN2)chn (China)10231428AS 4809 testsblocked
4657 (STARHUB-INTERNET)sgp (Singapore)340151914AS 4657 testsblocked
1221 (ASN-TELSTRA)aus (Australia)424542337AS 1221 testsblocked
20473 (AS-CHOOPA)usa (United States)828336944AS 20473 testsblocked
13335 (CLOUDFLARENET)usa (United States)1036619579AS 13335 testsblocked

Address Space Announcement History

The customer cone for 4637 is too large for a prefix list to be useful.

Last Modified 03/31/2025 03:24:24