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 Jun 2025: ASN Name Fixed-By 19230 NANOG 2025-06-10 27364 ACS-INTERNET 2025-06-12 40676 AS40676 2025-06-29 Further information for the inferred remediation is available at: https://spoofer.caida.org/remedy.php Source Address Validation issues inferred during Jun 2025: ASN Name First-Spoofed Last-Spoofed 40676 AS40676 2016-08-29 2025-06-24 63296 AWBROADBAND 2017-09-01 2025-06-26 22883 CONDENAST 2019-05-29 2025-06-30 21804 ACCESS-SK 2019-06-09 2025-06-24 12183 TALKIE-COMMUNICATIONS 2022-12-10 2025-06-26 400282 2023-04-27 2025-06-25 393577 SCCNET 2023-05-03 2025-06-26 61461 Airtek Solutions C.A. 2023-05-13 2025-06-26 20119 ARROW 2023-10-19 2025-06-27 394684 WISPERNET 2024-01-17 2025-06-27 393530 TLU 2024-05-22 2025-06-28 19935 CRRS 2024-05-29 2025-06-26 30475 WEHOSTWEBSITES-COM 2024-09-30 2025-06-09 54334 ROYA 2025-03-13 2025-06-25 16739 MIDCO-NET-INV 2025-03-19 2025-06-04 138915 KAOPU-HK 2025-03-30 2025-06-06 273843 2025-04-02 2025-06-30 400175 2025-06-08 2025-06-09 213953 2025-06-09 2025-06-09 42337 RESPINA 2025-06-09 2025-06-09 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