doh-cli 0.2

a simple DNS-over-HTTPS client

doh-cli

a simple DNS over HTTPS client

This is a simple DoH python client (RFC 8484, GET), json output by default! In less than 100 lines of code (more or less).

Install

pip3 install doh-cli

Requirements

It's based & tested on Python 3.

If you want to contribute, you can clone the repository and install all dependencies locally:

pip3 install .

Usage

doh-cli libredns.gr A

Help

doh-cli --help

Supported Resource Records

• A
• AAAA
• CNAME
• MX
• NS
• SOA
• SPF
• SRV
• TXT
• CAA

Supported DoH Servers

• https://libredns.gr
• https://dns.google
• https://cloudflare-dns.com
• https://quad9.net
• https://doh.cleanbrowsing.org
• https://www.cira.ca/cybersecurity-services/canadian-shield
• you may also provide your own DoH server URL

DoH Options

• libredns (default)
• libredns-ads (LibreDNS No-Trackers/Ads)
• google
• cloudflare
• quad9
• cleanbrowsing
• cira (CIRA's Canadian Shield)
• cira-protect (Protected adds malware and phishing blocking)
• cira-family (Family blocks malware and phishing plus pornographic content)

Some Examples

IPv4

doh-cli libredns.gr A

[{"Query": "libredns.gr.", "TTL": "366", "RR": "A", "Answer": "116.202.176.26"}]

you can use jq to format, parse output:

doh-cli libredns.gr A | jq .

[
  {
    "Query": "libredns.gr.",
    "TTL": "54",
    "RR": "A",
    "Answer": "116.202.176.26"
  }
]

IPv6

doh-cli libredns.gr AAAA | jq .

[
  {
    "Query": "libredns.gr.",
    "TTL": "207",
    "RR": "AAAA",
    "Answer": "2a01:4f8:c2c:52bf::1"
  }
]

CNAME

doh-cli www.libredns.gr CNAME | jq .

[
  {
    "Query": "www.libredns.gr.",
    "TTL": "600",
    "RR": "CNAME",
    "Answer": "libredns.gr."
  }
]

MX

doh-cli libreops.cc MX | jq .

[
  {
    "Query": "libreops.cc.",
    "TTL": "10794",
    "RR": "MX",
    "Answer": [
      "10",
      "spool.mail.gandi.net.",
      "libreops.cc.",
      "10794",
      "IN",
      "MX",
      "50",
      "fb.mail.gandi.net."
    ]
  }
]

CAA

doh-cli libredns.gr CAA

[{"Query": "libredns.gr.", "TTL": "590", "RR": "CAA", "Answer": ["0", "issue", "\"letsencrypt.org\""]}]

Plain Output

doh-cli libredns.gr A --output plain

116.202.176.26

verbose

doh-cli libredns.gr A --output plain --verbose

https://doh.libredns.gr/dns-query?dns=lSIBAAABAAAAAAAACGxpYnJlZG5zAmdyAAABAAE
116.202.176.26

debug

doh-cli test.libredns.gr A --output plain --debug

id 24169
opcode QUERY
rcode NOERROR
flags QR RD RA
;QUESTION
test.libredns.gr. IN A
;ANSWER
test.libredns.gr. 3600 IN A 116.202.176.26
;AUTHORITY
libredns.gr. 1822 IN SOA ns1.gandi.net. hostmaster.gandi.net. 1582812814 10800 3600 604800 10800
;ADDITIONAL

116.202.176.26

Query time

doh-cli test.libredns.gr A --output plain --time

Query time: 531.764

116.202.176.26

doh-cli test.libredns.gr --time

Query time: 540.990

[{"Query": "test.libredns.gr.", "TTL": "3600", "RR": "A", "Answer": ["116.202.176.26"]}]

Disclaimer: This value is relative to python request against DoH service, not the actual dns response.

Choose another DNS server

doh-cli libredns.gr A --output plain --dns cloudflare

116.202.176.26

or you can use LibreDNS Block Trackers endpoint:

doh-cli --output plain --dns libredns-ads analytics.google.com A

0.0.0.0

or provide your own DoH url:

doh-cli --output plain --dns https://doh.libredns.gr/dns-query www.example.com A

93.184.216.34