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 nzl. Inferred improvements during Sep 2019: ASN Name Fixed-By 55850 TRUSTPOWERLTD 2019-09-18 Further information for the inferred remediation is available at: https://spoofer.caida.org/remedy.php Source Address Validation issues inferred during Sep 2019: ASN Name First-Spoofed Last-Spoofed 4768 VFNZ-INET 2019-09-14 2019-09-14 Further information for these tests where we received spoofed packets is available at: https://spoofer.caida.org/recent_tests.php?country_include=nzl&no_block=1 Please send any feedback or suggestions to spoofer-info(a)caida.org