Is it an emoji?

Emojicode, 179 bytes

a➡na◀n 9728▶n 10175◀n 65024▶n 65039◀n 127744▶n 128591◀n 128640▶n 12876701

A callable that takes a list of integers representing the codepoints and returns 1 or 0.

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Emojicode, 187 bytes

a➡iani◀n 9728▶n 10175◀n 65024▶n 65039◀n 127744▶n 128591◀n 128640▶n 128767

A callable that takes a string and returns a boolean.

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Ungolfed and explained

 A callable that takes a  called input and returns a 
 input  ➡ 
  For each character in input
  character  input 
   Create a frozen called n containing the unicode codepoint of character
   n  character
   If the value is in one of specific ranges, return  (if the current character is not an emoji)
  ◀n 9728▶n 10175◀n 65024▶n 65039◀n 127744▶n 128591◀n 128640▶n 128767
    
  
 
  Since we're here, all characters are an emoji, so return 
 

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Ruby, 61 56+1 = 62 57 47 bytes

Uses the -n flag and takes input from STDIN. Prints 0 for truthy and nil for falsy.

-5 bytes because for some reason I initially thought the regex solution would not work???

-10 bytes from NieDzejkob for noticing a code point overlap that I missed :o

p$_=~/^[--☀-➿︀-︀️]*$/

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