Spoofing Information for AS 1273 (CW)

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
195.59.140.x/242023-03-30 11:23:21 GMTblockedblocked

Customers of AS 1273 we have spoofer tests from

This is the list of directly connected customers of AS 1273 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
51375 (VIVABH)bhr (Bahrain)61836AS 51375 testsreceived
3329 (HOL-GR)grc (Greece)61871AS 3329 testsreceived
9299 (IPG-AS-AP)phl (Philippines)8951377AS 9299 testsreceived
5378gbr (United Kingdom)232AS 5378 testsblocked
3333 (RIPE-NCC-AS)nld (Netherlands)321AS 3333 testsblocked
12353 (VODAFONE-PT)prt (Portugal)7119AS 12353 testsblocked
15502 (Vodafone-Ireland-ASN)irl (Ireland)2015AS 15502 testsblocked
9500 (VODAFONE-TRANSIT-AS)nzl (New Zealand)21138AS 9500 testsblocked
15557 (LDCOMNET)fra (France)520101AS 15557 testsblocked
16019 (VODAFONE-CZ-AS)cze (Czech Republic)637174AS 16019 testsblocked
36925 (ASMedi)mar (Morocco)116321AS 36925 testsblocked
3209 (VODANET)deu (Germany)2524214AS 3209 testsblocked
7552 (VIETEL-AS-AP)vnm (Vietnam)5913539AS 7552 testsblocked

Address Space Announcement History

The customer cone for 1273 is too large for a prefix list to be useful.

Last Modified