| gdns-package | Tools to Work with Google DNS Over HTTPS API |
| bulk_query | Vectorized query, returning only answers in a data frame |
| gdns | Tools to Work with Google DNS Over HTTPS API |
| has_spf | Test for whether a DNS TXT record is an SPF record |
| is_hard_fail | SPF "all" type test |
| is_soft_fail | SPF "all" type test |
| passes_all | SPF "all" type test |
| query | Perform DNS over HTTPS queries using Google |
| resource_record_tbl | An overview of resource records (RRs) permissible in zone files of the Domain Name System (DNS) |
| spf_exists | SPF field extraction functions |
| spf_includes | SPF field extraction functions |
| spf_ipv4s | SPF field extraction functions |
| spf_ipv6s | SPF field extraction functions |
| spf_ptrs | SPF field extraction functions |
| split_spf | Split out all SPF records in a domain's TXT record |