In response to feedback from operational security communities, CAIDA's source address validation measurement project (https://spoofer.caida.org) is automatically generating monthly reports of ASes originating prefixes in BGP for systems from which we received packets with a spoofed source address. We are publishing these reports to network and security operations lists in order to ensure this information reaches operational contacts in these ASes. This report summarises tests conducted within usa, can. Inferred improvements during Dec 2024: ASN Name Fixed-By 25637 PRMTC 2024-12-05 393530 TLU 2024-12-07 7018 ATT-INTERNET4 2024-12-19 20260 SAWTEL-UC 2024-12-31 Further information for the inferred remediation is available at: https://spoofer.caida.org/remedy.php Source Address Validation issues inferred during Dec 2024: ASN Name First-Spoofed Last-Spoofed 3356 LEVEL3 2016-03-06 2024-12-07 40676 AS40676 2016-08-29 2024-12-30 27364 ACS-INTERNET 2016-09-27 2024-12-26 20412 CLARITY-TELECOM 2016-09-30 2024-12-06 63296 AWBROADBAND 2017-09-01 2024-12-26 2152 CSUNET-NW 2017-11-08 2024-12-04 21804 ACCESS-SK 2019-06-09 2024-12-31 22773 ASN-CXA-ALL-CCI-22773-RDC 2021-10-24 2024-12-17 12183 TALKIE-COMMUNICATIONS 2022-12-10 2024-12-26 3701 NERONET 2023-04-18 2024-12-28 400282 2023-04-27 2024-12-26 393577 SCCNET 2023-05-03 2024-12-31 202400 2023-05-08 2024-12-30 61461 Airtek Solutions C.A. 2023-05-13 2024-12-26 268207 RVT Serviços de Telecomunica� 2023-09-04 2024-12-04 20119 ARROW 2023-10-19 2024-12-26 394684 WISPERNET 2024-01-17 2024-12-28 19935 CRRS 2024-05-29 2024-12-31 3801 MISNET 2024-09-09 2024-12-30 20260 SAWTEL-UC 2024-10-23 2024-12-09 30083 AS-30083-GO-DADDY-COM-LLC 2024-12-09 2024-12-30 21859 ZNET 2024-12-18 2024-12-24 19530 NDIN-STATE 2024-12-20 2024-12-20 Further information for these tests where we received spoofed packets is available at: https://spoofer.caida.org/recent_tests.php?country_include=usa,can&no_block=1 Please send any feedback or suggestions to spoofer-info@caida.org