1.1.1.1: Fast, privacy-first consumer DNS service

TIL you can also use 1.1 and it will expand to 1.0.0.1

  $> ping 1.1

  PING 1.1 (1.0.0.1) 56(84) bytes of data.
  64 bytes from 1.0.0.1: icmp_seq=1 ttl=55 time=28.3 ms
  64 bytes from 1.0.0.1: icmp_seq=2 ttl=55 time=33.0 ms
  64 bytes from 1.0.0.1: icmp_seq=3 ttl=55 time=43.6 ms
  64 bytes from 1.0.0.1: icmp_seq=4 ttl=55 time=41.7 ms
  64 bytes from 1.0.0.1: icmp_seq=5 ttl=55 time=56.5 ms
  64 bytes from 1.0.0.1: icmp_seq=6 ttl=55 time=38.4 ms
  64 bytes from 1.0.0.1: icmp_seq=7 ttl=55 time=34.8 ms
  64 bytes from 1.0.0.1: icmp_seq=8 ttl=55 time=45.7 ms
  64 bytes from 1.0.0.1: icmp_seq=9 ttl=55 time=45.2 ms
  64 bytes from 1.0.0.1: icmp_seq=10 ttl=55 time=43.1 ms

You can also use the decimal value of the IP, without the dots: https://16843009

Hex works too: https://0x1010101

Sadly, binary / octal don't work: https://0b1000000010000000100000001 / https://0o100200401

Octal works, with the older 0-prefix convention: https://0100200401