Seven-Character Domain Availability

Name: Seven-Character Domain Registration Density
Creator: DNS Checker

There are exactly 89,804,121,984 possible 7-character domain names — eighty-nine billion eight hundred four million one hundred twenty-one thousand nine hundred eighty-four. More possible domains than the estimated number of stars visible from Earth with the most powerful telescopes. At seven characters, the namespace dwarfs anything humans could exhaust in a lifetime.

Using letters only (a–z), there are 8,031,810,176 possible domains. Just over eight billion — roughly one possible domain for every person alive on Earth. The namespace has reached human-population scale.

Allowing both letters and digits (a–z, 0–9) creates 78,364,164,096 combinations. Nearly ten possible domains for every human being. Even the most popular TLDs have enormous availability at this length.

Here's how saturated each TLD is at this length.

Data updated daily — last snapshot: April 29, 2026

billion valid combinations

all valid 7-character domain labels (a–z, 0–9, hyphens)

billion alphabetic

26⁷ using a–z

billion alphanumeric

36⁷ with digits 0–9

saturation

across 50 TLDs

.com registered

0.12% of total

Which TLDs Are Most Saturated at 7 Characters?

How Full Is Each TLD at 7 Characters?

#	TLD	Registered	% Full (Alpha)	% Full (Alphanum)	Hyphenated	Numeric Only	DNSSEC %	Status
1	.com	9,653,821	0.12%	0.01%	636,008	177,786	3.6%	Largely Open
2	.net	997,244	0.01%	<0.01%	67,667	4,399	5.3%	Largely Open
3	.org	735,756	0.01%	<0.01%	51,044	392	5.8%	Largely Open
4	.xyz	644,851	0.01%	<0.01%	—	94,983	2.4%	Largely Open
5	.top	584,162	0.01%	<0.01%	10,770	13,160	1.2%	Largely Open
6	.shop	475,605	0.01%	<0.01%	8,526	2,233	4.3%	Largely Open
7	.info	461,911	0.01%	<0.01%	21,614	836	3.3%	Largely Open
8	.bond	339,351	<0.01%	<0.01%	903	50	0.2%	Largely Open
9	.sbs	310,788	<0.01%	<0.01%	—	633	0.6%	Largely Open
10	.online	263,048	<0.01%	<0.01%	18,294	342	3.9%	Largely Open
11	.store	185,549	<0.01%	<0.01%	7,478	101	2.8%	Largely Open
12	.vip	172,079	<0.01%	<0.01%	4,463	11,936	1.0%	Largely Open
13	.site	165,597	<0.01%	<0.01%	7,825	196	2.5%	Largely Open
14	.ch	164,521	<0.01%	<0.01%	—	38	51.4%	Largely Open
15	.app	161,584	<0.01%	<0.01%	4,232	1,532	8.1%	Largely Open
16	.autos	123,361	<0.01%	<0.01%	—	—	0.5%	Largely Open
17	.pro	113,751	<0.01%	<0.01%	6,317	677	4.3%	Largely Open
18	.se	112,082	<0.01%	<0.01%	—	24	59.7%	Largely Open
19	.biz	100,938	<0.01%	<0.01%	6,453	104	4.1%	Largely Open
20	.dev	85,994	<0.01%	<0.01%	2,301	16	15.7%	Largely Open
21	.asia	79,059	<0.01%	<0.01%	—	—	2.6%	Largely Open
22	.tech	67,521	<0.01%	<0.01%	—	—	5.8%	Largely Open
23	.cfd	63,968	<0.01%	<0.01%	—	—	4.1%	Largely Open
24	.cloud	63,691	<0.01%	<0.01%	—	—	7.9%	Largely Open
25	.space	60,594	<0.01%	<0.01%	—	—	3.3%	Largely Open
26	.live	59,159	<0.01%	<0.01%	—	—	4.8%	Largely Open
27	.click	56,275	<0.01%	<0.01%	—	—	8.6%	Largely Open
28	.icu	55,776	<0.01%	<0.01%	—	—	1.4%	Largely Open
29	.club	51,494	<0.01%	<0.01%	—	—	3.1%	Largely Open
30	.fun	47,145	<0.01%	<0.01%	—	—	3.1%	Largely Open
31	.life	45,643	<0.01%	<0.01%	—	—	2.2%	Largely Open
32	.buzz	36,896	<0.01%	<0.01%	—	—	2.3%	Largely Open
33	.cyou	36,606	<0.01%	<0.01%	—	—	3.3%	Largely Open
34	.yachts	36,068	<0.01%	<0.01%	—	—	0.4%	Largely Open
35	.world	33,675	<0.01%	<0.01%	—	—	3.4%	Largely Open
36	.work	30,696	<0.01%	<0.01%	—	—	3.9%	Largely Open
37	.mobi	29,484	<0.01%	<0.01%	—	—	2.0%	Largely Open
38	.art	28,553	<0.01%	<0.01%	—	—	8.0%	Largely Open
39	.lol	27,140	<0.01%	<0.01%	590	156	19.4%	Largely Open
40	.boats	26,936	<0.01%	<0.01%	—	—	0.7%	Largely Open
41	.one	25,955	<0.01%	<0.01%	—	—	19.6%	Largely Open
42	.digital	25,494	<0.01%	<0.01%	—	—	8.2%	Largely Open
43	.link	25,452	<0.01%	<0.01%	—	—	12.2%	Largely Open
44	.blog	24,613	<0.01%	<0.01%	—	—	5.8%	Largely Open
45	.beer	23,681	<0.01%	<0.01%	—	—	4.6%	Largely Open
46	.website	23,242	<0.01%	<0.01%	—	—	2.7%	Largely Open
47	.studio	20,053	<0.01%	<0.01%	—	—	8.8%	Largely Open
48	.makeup	18,493	<0.01%	<0.01%	—	—	45.3%	Largely Open
49	.nu	17,339	<0.01%	<0.01%	—	—	56.7%	Largely Open
50	.email	16,750	<0.01%	<0.01%	—	—	8.7%	Largely Open

What Are Seven-Character Domain Names Worth?

At 7 characters, the domain namespace becomes vast — 8,031,810,176 possible alphabetic combinations. Even the most popular TLDs have significant availability at this length. The challenge shifts from scarcity to finding memorable, meaningful names.

Longer domains are often full words or multi-word combinations. While they lack the premium cachet of short domains, they offer excellent opportunities for keyword-rich, descriptive domain names.

Explore Seven-Character Availability by TLD

How Are These Combination Counts Calculated?

Domain name labels (the part before the dot) follow strict character rules defined in RFC 5891 and RFC 1035. DNS Checker calculates three tiers of possible combinations for each domain length:

Alphabetic (a–z)

26⁷ = 8,031,810,176

Only the 26 lowercase letters. The simplest calculation — each position has 26 choices, so 7 positions gives 26⁷.

Alphanumeric (a–z, 0–9)

36⁷ = 78,364,164,096

Letters plus digits. Each position has 36 choices. Domain names are case-insensitive, so uppercase and lowercase are equivalent.

All Valid Labels

89,804,121,984 total

Includes hyphens, but with restrictions. The total is not simply 37⁷ because hyphens have placement rules.

Character Set	Characters	Formula	7-Char Combinations
Alphabetic	a–z (26)	26⁷	8,031,810,176
Alphanumeric	a–z, 0–9 (36)	36⁷	78,364,164,096
All Valid Labels	a–z, 0–9, hyphen (37)	With placement rules	89,804,121,984

Hyphen Placement Rules

No leading hyphen — the first character must be a letter or digit (36 choices, not 37)
No trailing hyphen — the last character must also be a letter or digit (36 choices)
No double-hyphen at positions 3–4 — labels like xn--example are reserved for internationalized domain names (IDN) under RFC 5891 §4.2.3.1. A hyphen in position 3 and position 4 simultaneously is not permitted in standard registrations.

These constraints mean the "all valid" count is less than a simple 36 × 37^5 × 36 calculation — the double-hyphen exclusion at positions 3–4 removes a subset of otherwise valid combinations. All three counts are mathematical constants that never change — only the number of registered domains (shown in the table above) changes daily.

Frequently Asked Questions

Data updated daily — last snapshot: April 29, 2026

Seven-Character Domain Availability

Which TLDs Are Most Saturated at 7 Characters?

How Full Is Each TLD at 7 Characters?

What Are Seven-Character Domain Names Worth?

Explore Seven-Character Availability by TLD

How Are These Combination Counts Calculated?

Frequently Asked Questions

How many possible 7-character domain names exist?

Are 7-character domains valuable?

Which TLDs still have 7-character domains available?

What does the DNSSEC percentage mean for 7-character domains?

How many 7-character domains are registered across all TLDs?

What is the difference between alphabetic and alphanumeric domain combinations?

Where can I find available 7-character domain names?