Each column (separated by tab) of processed certificates shows field information found in the certificates. id: the fingerprint of this certificate x509: x509 version isCA: whether or not this certificate is a CA certificate common_name: The common name of the certificate subject_alt_names: The subject alt names (SANs) of the certificate domains: The domain name of the certificate issuer_common_name: The issuer's common name of the certificate serial_number: The serial number of the certificate not_before: Not Before field of the certificate not_after: Not After of the certificate ig1: ignore this field ig2: ignore this field ig3: ignore this field ig4: ignore this field oids: The name of this OID (Organization ID) crls: CRL (Certificate Revocation List) distribution point of the certificate ocsp: OCSP (Online Certificate Status Protocol) of the certificate aias: AIAs (Authority Information Access) of the certificate public_key: The public key of this certificate key_algo: algorithm used to generate public key for this certificate key_len: public key length of this certificate ig5: ignore this field ig6: ignore this field parser: PyOpenSSL ig7: ignore this field ig8: ignore this field ig9: ignore this field subject_key_id: subject key ID of this certificate authority_key_id: authority key ID of this certificate ig10: ignore this field hostlist: The IP list that advertised this certificate isValid: whether or not this certificate is valid ErrNo: Error number produced from OpenSSL (if it is an invalid certificate)