TAGPMA has accredited the following Certificate Authorities: | Name | Alias | Type
| URL
| CILogon Silver CA 1
| cilogon-silver | mics
| http://ca.cilogon.org/
| DigiCert Assured ID Root CA
| DigiCertAssuredIDRootCA-Root | classic
| http://www.digicert-grid.com/
| | DigiCert Grid CA-1 | DigiCertGridCA-1-Classic | classic | http://www.Digicert-grid.com/ | | DigiCert Grid CA-1 G2 | DigiCertGridCA-1G2-Classic-2015 | classic | http://www.digicert-grid.com/
| | DigiCert Grid Root CA | DigiCertGridRootCA-Root | classic | http://www.digicert-grid.com/ | DigiCert Grid Trust CA
| DigiCertGridTrustCA-Classic | classic | http://www.DigiCert-Grid.com/
| DigiCert Grid Trust CA G2
| DigiCertGridTrustCAG2-Classic | classic | http://www.DigiCert-Grid.com/ | | Grid Canada Certificate Authority | GridCanada | classic | http://www.gridcanada.ca/ca | | InCommon IGTF Server CA | InCommon-IGTF-Server-CA | classic | https://www.incommon.org/cert/
| | NCSA MyProxy CA 2013 | NCSA-slcs-2013 | slcs
| https://security.ncsa.uiuc.edu/CA/
| | NCSA Two Factor CA 2013 | NCSA-tfca-2013 | slcs | https://security.ncsa.illinois.edu/CA/ | | NERSC Online CA | NERSC-SLCS | slcs
| http://certs.nersc.gov/
| | PKIUNAMgrid | PKIUNAMgrid | classic
| http://ca.unamgrid.unam.mx/ | | PSC MyProxy CA | PSC-Myproxy-CA | slcs | http://www.psc.edu/ca/
| | REUNA Certification Authority | REUNA-ca | classic | http://reuna-ca.reuna.cl/ | UNAMGrid CA
| UNAMgrid-ca | classic
| http://ca.unamgrid.unam.mx/ | UNLP PKIGrid
| UNLPGrid | classic | https://www.pkigrid.unlp.edu.ar/ |
| 