Spoofing Information for AS 1273 (CW)

Spoofing status per IP block (all dates)

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
90.240.29.x/242017-10-31 14:44:06 GMTblockedblocked
90.240.48.x/242017-10-30 20:26:32 GMTblockedblocked
194.221.164.x/242017-06-07 15:35:44 GMTblockedblocked
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
3329 (HOL-GR)grc (Greece)80073AS 3329 testsreceived
51375 (VIVABH)bhr (Bahrain)170252AS 51375 testsreceived
45758 (TTBP-AS-AP)tha (Thailand)4987128AS 45758 testsreceived
7552 (VIETEL-AS-AP)vnm (Vietnam)288651460AS 7552 testsreceived
3333 (RIPE-NCC-AS)nld (Netherlands)462AS 3333 testsblocked
9500 (VODAFONE-TRANSIT-AS)nzl (New Zealand)20938AS 9500 testsblocked
15557 (LDCOMNET)fra (France)515101AS 15557 testsblocked
16019 (VODAFONE-CZ-AS)cze (Czech Republic)632176AS 16019 testsblocked
12302 (Vodafone_Ro)rou (Romania)1188302AS 12302 testsblocked
36925 (ASMedi)mar (Morocco)126238AS 36925 testsblocked
3209 (VODANET)deu (Germany)2506211AS 3209 testsblocked

Address Space Announcement History

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

Last Modified