area
/ˈeərɪə/
Binary Representation
11-bit index: 00001011010 (decimal 90)
Position
#91 of 2048
Hex Index
0x05A
4-Letter Prefix
area
About "area" in BIP39
"area" is the #91 word
in the official BIP39 English mnemonic wordlist. It is encoded as the 11-bit binary value
00001011010
(decimal index 90), placing it at the 4% mark of the full 2048-word list.
The 4-letter prefix "area" uniquely identifies this word among all 2048 entries. At just 4 characters, "area" is one of the shorter words in the BIP39 list, making it quicker to type during wallet recovery but potentially easier to confuse with similar short entries.
Positioned in the first quarter of the wordlist (index 90), "area" starts with "A" — a letter group containing 136 words total. It is word #91 within that group. Words early in the list have lower binary values with more leading zeros, which can be relevant when analyzing raw entropy data.
In a 12-word seed phrase, each word encodes 11 bits of entropy. The probability of "area" appearing in any specific position of a randomly generated phrase is 1 in 2048 (≈ 0.049%). A complete 24-word phrase encodes 256 bits of entropy, providing security equivalent to a key space of approximately 1.16 × 10⁷⁷ — far beyond the reach of brute-force attacks.
Word #91 in the Other 9 BIP39 Wordlists
Every official BIP39 wordlist has exactly 2048 entries, so index 90 encodes the same 11-bit value
(00001011010) in every language.
A wallet configured for one of these languages would use this word instead of "area":
Similar Words — Check Carefully During Recovery
One BIP39 word differs from "area" by just a single letter — the most common source of typos when a seed phrase is entered by hand:
Words sharing the first three letters "are":
Reminder: the first 4 letters of every BIP39 word are unique across the whole list, so "area" always identifies "area".