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 Aug 2018: ASN Name Fixed-By 33651 CMCS 2018-08-15 2152 CSUNET-NW 2018-08-20 54417 STIMULUS-TECHNOLOGIES 2018-08-22 21949 BEANFIELD 2018-08-29 Further information for the inferred remediation is available at: https://spoofer.caida.org/remedy.php Source Address Validation issues inferred during Aug 2018: ASN Name First-Spoofed Last-Spoofed 3356 LEVEL3 2016-03-06 2018-08-13 577 BACOM 2016-03-09 2018-08-27 7922 COMCAST-7922 2016-06-04 2018-08-28 20115 CHARTER-NET-HKY-NC 2016-06-09 2018-08-23 209 CENTURYLINK-US-LEGACY-QWEST 2016-08-16 2018-08-29 6128 CABLE-NET-1 2016-09-03 2018-08-11 11232 MIDCO-NET 2016-09-22 2018-08-11 20412 CLARITY-TELECOM 2016-09-30 2018-08-28 6181 FUSE-NET 2016-10-10 2018-08-31 15305 SYRINGANETWORKS 2016-10-21 2018-08-25 25787 ROWE-NETWORKS 2016-10-21 2018-08-29 174 COGENT-174 2016-10-21 2018-08-22 271 BCNET 2016-10-24 2018-08-17 2828 XO-AS15 2016-10-25 2018-08-24 30341 SCTA-ASN 2016-10-31 2018-08-26 32440 LONI 2016-11-03 2018-08-29 33182 DimeNOC 2016-11-08 2018-08-30 12083 WOW-INTERNET 2016-11-09 2018-08-31 1403 EBOX 2016-11-12 2018-08-19 22561 CENTURYLINK-LEGACY-LIGHTCORE 2016-11-27 2018-08-06 21947 BCI 2017-01-06 2018-08-27 7106 INDEPENDENTSFIBERNETWORK 2017-01-09 2018-08-17 9009 M247 2017-01-10 2018-08-24 21832 KELLINCOM-1 2017-02-03 2018-08-25 7122 MTS-ASN 2017-05-16 2018-08-27 701 UUNET 2017-06-14 2018-08-13 22402 NEXTCO 2017-06-19 2018-08-16 6461 ZAYO-6461 2017-06-21 2018-08-28 20394 MASHELL-TELECOM 2017-06-29 2018-08-07 63296 AMARILLO-WIRELESS 2017-09-01 2018-08-30 7233 YAHOO-US 2017-09-07 2018-08-09 2152 CSUNET-NW 2017-11-08 2018-08-30 546 PARSONS-PGS-1 2017-11-20 2018-08-29 54540 INCERO 2018-01-15 2018-08-27 12222 AKAMAI 2018-02-14 2018-08-31 3257 GTT-BACKBONE 2018-03-06 2018-08-31 29384 Qatar-Foundation 2018-03-08 2018-08-26 23148 TERRENAP 2018-03-15 2018-08-30 54417 STIMULUS-TECHNOLOGIES 2018-03-29 2018-08-28 20009 WADSNET 2018-04-13 2018-08-29 4201 ORST 2018-04-19 2018-08-24 11827 WSU 2018-04-19 2018-08-29 393564 SPOKANE 2018-06-05 2018-08-15 35911 BNQ-1 2018-06-06 2018-08-29 225 VIRGINIA 2018-06-18 2018-08-21 30174 UTA 2018-08-03 2018-08-10 22773 ASN-CXA-ALL-CCI-22773-RDC 2018-08-04 2018-08-28 33588 BRESNAN 2018-08-05 2018-08-05 22742 CT-EDU-NET 2018-08-08 2018-08-29 53646 HARRIS-BROADBAND 2018-08-10 2018-08-10 55053 COLOWAREHOUSEONTARIO 2018-08-14 2018-08-15 54804 CSMIII-BUNKIELA 2018-08-21 2018-08-30 20057 ATT-MOBILITY-LLC-AS20057 2018-08-23 2018-08-23 15320 PRIMELINK 2018-08-23 2018-08-23 17025 ZAYO-CUSTOMER-17025 2018-08-23 2018-08-23 33452 RW 2018-08-24 2018-08-24 11260 EASTLINK-HSI 2018-08-26 2018-08-26 11996 LOBOIS 2018-08-28 2018-08-28 394153 VELOXINET 2018-08-28 2018-08-28 20448 VPNTRANET-LLC 2018-08-29 2018-08-29 40911 L2NC 2018-08-31 2018-08-31 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