Eight-Character Domain Availability

There are exactly 3,322,752,513,408 possible 8-character domain names — three trillion three hundred twenty-two billion seven hundred fifty-two million five hundred thirteen thousand four hundred eight. More possible domains than the number of gallons of water in all the Great Lakes combined. The eight-character namespace is an ocean of opportunity — virtually impossible to exhaust.

Using letters only (a–z), there are 208,827,064,576 possible domains. Over 200 billion letter-only combinations — about 25 possible domains for every person on Earth. Even .com has wide availability at this length.

Allowing both letters and digits (a–z, 0–9) creates 2,821,109,907,456 combinations. If a drop of water represented one domain, these combinations would fill over 1,000 Olympic swimming pools.

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

Data updated daily — last snapshot: April 1, 2026

trillion valid combinations

all valid 8-character domain labels (a–z, 0–9, hyphens)

billion alphabetic

26⁸ using a–z

trillion alphanumeric

36⁸ with digits 0–9

saturation

across 50 TLDs

.com registered

<0.01% of total

Which TLDs Are Most Saturated at 8 Characters?

How Full Is Each TLD at 8 Characters?

#	TLD	Registered	% Full (Alpha)	% Full (Alphanum)	Hyphenated	Numeric Only	DNSSEC %	Status
1	.com	5,801,016	<0.01%	<0.01%	416,706	81,109	3.9%	Largely Open
2	.net	1,018,970	<0.01%	<0.01%	74,565	1,759	5.3%	Largely Open
3	.org	774,951	<0.01%	<0.01%	53,285	360	5.6%	Largely Open
4	.xyz	767,006	<0.01%	<0.01%	—	160,411	2.1%	Largely Open
5	.top	416,202	<0.01%	<0.01%	12,875	17,874	6.4%	Largely Open
6	.shop	340,689	<0.01%	<0.01%	12,159	1,227	5.3%	Largely Open
7	.info	331,852	<0.01%	<0.01%	25,710	252	4.3%	Largely Open
8	.online	270,502	<0.01%	<0.01%	23,489	106	3.6%	Largely Open
9	.bond	219,907	<0.01%	<0.01%	3,774	64	0.1%	Largely Open
10	.vip	199,046	<0.01%	<0.01%	4,577	34,848	0.7%	Largely Open
11	.sbs	198,405	<0.01%	<0.01%	—	336	8.1%	Largely Open
12	.ch	188,079	<0.01%	<0.01%	—	40	52.0%	Largely Open
13	.store	186,854	<0.01%	<0.01%	9,588	170	2.6%	Largely Open
14	.lol	178,660	<0.01%	<0.01%	577	209	1.0%	Largely Open
15	.pro	158,510	<0.01%	<0.01%	5,490	121	2.5%	Largely Open
16	.site	151,395	<0.01%	<0.01%	9,850	165	2.4%	Largely Open
17	.app	128,113	<0.01%	<0.01%	4,010	461	8.4%	Largely Open
18	.se	121,230	<0.01%	<0.01%	—	19	60.6%	Largely Open
19	.biz	95,371	<0.01%	<0.01%	6,422	49	5.2%	Largely Open
20	.cfd	70,589	<0.01%	<0.01%	—	—	2.7%	Largely Open
21	.space	58,617	<0.01%	<0.01%	—	—	2.9%	Largely Open
22	.dev	55,841	<0.01%	<0.01%	1,724	9	15.2%	Largely Open
23	.tech	54,220	<0.01%	<0.01%	—	—	5.9%	Largely Open
24	.cloud	51,402	<0.01%	<0.01%	—	—	7.4%	Largely Open
25	.club	46,301	<0.01%	<0.01%	—	—	3.0%	Largely Open
26	.live	45,909	<0.01%	<0.01%	—	—	3.2%	Largely Open
27	.click	45,603	<0.01%	<0.01%	—	—	2.7%	Largely Open
28	.cyou	38,962	<0.01%	<0.01%	—	—	1.3%	Largely Open
29	.world	36,061	<0.01%	<0.01%	—	—	3.4%	Largely Open
30	.asia	32,636	<0.01%	<0.01%	—	—	2.9%	Largely Open
31	.life	28,271	<0.01%	<0.01%	—	—	2.8%	Largely Open
32	.autos	26,141	<0.01%	<0.01%	—	—	0.8%	Largely Open
33	.icu	24,549	<0.01%	<0.01%	—	—	1.0%	Largely Open
34	.art	23,219	<0.01%	<0.01%	—	—	7.8%	Largely Open
35	.work	22,765	<0.01%	<0.01%	—	—	3.4%	Largely Open
36	.fun	19,414	<0.01%	<0.01%	—	—	3.3%	Largely Open
37	.nu	17,994	<0.01%	<0.01%	—	—	57.5%	Largely Open
38	.mobi	17,457	<0.01%	<0.01%	—	—	1.5%	Largely Open
39	.website	17,305	<0.01%	<0.01%	—	—	3.4%	Largely Open
40	.blog	17,303	<0.01%	<0.01%	—	—	5.7%	Largely Open
41	.yachts	17,220	<0.01%	<0.01%	—	—	0.3%	Largely Open
42	.digital	15,878	<0.01%	<0.01%	—	—	4.3%	Largely Open
43	.studio	14,775	<0.01%	<0.01%	—	—	8.9%	Largely Open
44	.one	14,682	<0.01%	<0.01%	—	—	19.0%	Largely Open
45	.link	12,327	<0.01%	<0.01%	—	—	13.4%	Largely Open
46	.beer	11,008	<0.01%	<0.01%	—	—	25.8%	Largely Open
47	.bet	10,903	<0.01%	<0.01%	—	—	1.9%	Largely Open
48	.buzz	8,365	<0.01%	<0.01%	—	—	10.9%	Largely Open
49	.solutions	8,169	<0.01%	<0.01%	—	—	4.7%	Largely Open
50	.win	7,844	<0.01%	<0.01%	—	—	7.7%	Largely Open

What Are Eight-Character Domain Names Worth?

At 8 characters, the domain namespace becomes vast — 208,827,064,576 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 Eight-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. DNSChkr calculates three tiers of possible combinations for each domain length:

Alphabetic (a–z)

26⁸ = 208,827,064,576

Only the 26 lowercase letters. The simplest calculation — each position has 26 choices, so 8 positions gives 26⁸.

Alphanumeric (a–z, 0–9)

36⁸ = 2,821,109,907,456

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

All Valid Labels

3,322,752,513,408 total

Includes hyphens, but with restrictions. The total is not simply 37⁸ because hyphens have placement rules.

Character Set	Characters	Formula	8-Char Combinations
Alphabetic	a–z (26)	26⁸	208,827,064,576
Alphanumeric	a–z, 0–9 (36)	36⁸	2,821,109,907,456
All Valid Labels	a–z, 0–9, hyphen (37)	With placement rules	3,322,752,513,408

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 × 37^6 × 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 1, 2026

Eight-Character Domain Availability

Allowing both letters and digits (a–z, 0–9) creates 2,821,109,907,456 combinations. If a drop of water represented one domain, these combinations would fill over 1,000 Olympic swimming pools.

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

Data updated daily — last snapshot: April 1, 2026

trillion valid combinations

all valid 8-character domain labels (a–z, 0–9, hyphens)

billion alphabetic

26⁸ using a–z

trillion alphanumeric

36⁸ with digits 0–9

saturation

across 50 TLDs

.com registered

<0.01% of total

How Full Is Each TLD at 8 Characters?

#	TLD	Registered	% Full (Alpha)	% Full (Alphanum)	Hyphenated	Numeric Only	DNSSEC %	Status
1	.com	5,801,016	<0.01%	<0.01%	416,706	81,109	3.9%	Largely Open
2	.net	1,018,970	<0.01%	<0.01%	74,565	1,759	5.3%	Largely Open
3	.org	774,951	<0.01%	<0.01%	53,285	360	5.6%	Largely Open
4	.xyz	767,006	<0.01%	<0.01%	—	160,411	2.1%	Largely Open
5	.top	416,202	<0.01%	<0.01%	12,875	17,874	6.4%	Largely Open
6	.shop	340,689	<0.01%	<0.01%	12,159	1,227	5.3%	Largely Open
7	.info	331,852	<0.01%	<0.01%	25,710	252	4.3%	Largely Open
8	.online	270,502	<0.01%	<0.01%	23,489	106	3.6%	Largely Open
9	.bond	219,907	<0.01%	<0.01%	3,774	64	0.1%	Largely Open
10	.vip	199,046	<0.01%	<0.01%	4,577	34,848	0.7%	Largely Open
11	.sbs	198,405	<0.01%	<0.01%	—	336	8.1%	Largely Open
12	.ch	188,079	<0.01%	<0.01%	—	40	52.0%	Largely Open
13	.store	186,854	<0.01%	<0.01%	9,588	170	2.6%	Largely Open
14	.lol	178,660	<0.01%	<0.01%	577	209	1.0%	Largely Open
15	.pro	158,510	<0.01%	<0.01%	5,490	121	2.5%	Largely Open
16	.site	151,395	<0.01%	<0.01%	9,850	165	2.4%	Largely Open
17	.app	128,113	<0.01%	<0.01%	4,010	461	8.4%	Largely Open
18	.se	121,230	<0.01%	<0.01%	—	19	60.6%	Largely Open
19	.biz	95,371	<0.01%	<0.01%	6,422	49	5.2%	Largely Open
20	.cfd	70,589	<0.01%	<0.01%	—	—	2.7%	Largely Open
21	.space	58,617	<0.01%	<0.01%	—	—	2.9%	Largely Open
22	.dev	55,841	<0.01%	<0.01%	1,724	9	15.2%	Largely Open
23	.tech	54,220	<0.01%	<0.01%	—	—	5.9%	Largely Open
24	.cloud	51,402	<0.01%	<0.01%	—	—	7.4%	Largely Open
25	.club	46,301	<0.01%	<0.01%	—	—	3.0%	Largely Open
26	.live	45,909	<0.01%	<0.01%	—	—	3.2%	Largely Open
27	.click	45,603	<0.01%	<0.01%	—	—	2.7%	Largely Open
28	.cyou	38,962	<0.01%	<0.01%	—	—	1.3%	Largely Open
29	.world	36,061	<0.01%	<0.01%	—	—	3.4%	Largely Open
30	.asia	32,636	<0.01%	<0.01%	—	—	2.9%	Largely Open
31	.life	28,271	<0.01%	<0.01%	—	—	2.8%	Largely Open
32	.autos	26,141	<0.01%	<0.01%	—	—	0.8%	Largely Open
33	.icu	24,549	<0.01%	<0.01%	—	—	1.0%	Largely Open
34	.art	23,219	<0.01%	<0.01%	—	—	7.8%	Largely Open
35	.work	22,765	<0.01%	<0.01%	—	—	3.4%	Largely Open
36	.fun	19,414	<0.01%	<0.01%	—	—	3.3%	Largely Open
37	.nu	17,994	<0.01%	<0.01%	—	—	57.5%	Largely Open
38	.mobi	17,457	<0.01%	<0.01%	—	—	1.5%	Largely Open
39	.website	17,305	<0.01%	<0.01%	—	—	3.4%	Largely Open
40	.blog	17,303	<0.01%	<0.01%	—	—	5.7%	Largely Open
41	.yachts	17,220	<0.01%	<0.01%	—	—	0.3%	Largely Open
42	.digital	15,878	<0.01%	<0.01%	—	—	4.3%	Largely Open
43	.studio	14,775	<0.01%	<0.01%	—	—	8.9%	Largely Open
44	.one	14,682	<0.01%	<0.01%	—	—	19.0%	Largely Open
45	.link	12,327	<0.01%	<0.01%	—	—	13.4%	Largely Open
46	.beer	11,008	<0.01%	<0.01%	—	—	25.8%	Largely Open
47	.bet	10,903	<0.01%	<0.01%	—	—	1.9%	Largely Open
48	.buzz	8,365	<0.01%	<0.01%	—	—	10.9%	Largely Open
49	.solutions	8,169	<0.01%	<0.01%	—	—	4.7%	Largely Open
50	.win	7,844	<0.01%	<0.01%	—	—	7.7%	Largely Open

What Are Eight-Character Domain Names Worth?

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.

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. DNSChkr calculates three tiers of possible combinations for each domain length:

Alphabetic (a–z)

26⁸ = 208,827,064,576

Only the 26 lowercase letters. The simplest calculation — each position has 26 choices, so 8 positions gives 26⁸.

Alphanumeric (a–z, 0–9)

36⁸ = 2,821,109,907,456

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

All Valid Labels

3,322,752,513,408 total

Includes hyphens, but with restrictions. The total is not simply 37⁸ because hyphens have placement rules.

Character Set	Characters	Formula	8-Char Combinations
Alphabetic	a–z (26)	26⁸	208,827,064,576
Alphanumeric	a–z, 0–9 (36)	36⁸	2,821,109,907,456
All Valid Labels	a–z, 0–9, hyphen (37)	With placement rules	3,322,752,513,408

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.

Frequently Asked Questions

Eight-Character Domain Availability

Which TLDs Are Most Saturated at 8 Characters?

How Full Is Each TLD at 8 Characters?

What Are Eight-Character Domain Names Worth?

Explore Eight-Character Availability by TLD

How Are These Combination Counts Calculated?

Frequently Asked Questions

How many possible 8-character domain names exist?

Are 8-character domains valuable?

Which TLDs still have 8-character domains available?

What does the DNSSEC percentage mean for 8-character domains?

How many 8-character domains are registered across all TLDs?

What is the difference between alphabetic and alphanumeric domain combinations?

Where can I find available 8-character domain names?

Eight-Character Domain Availability

Which TLDs Are Most Saturated at 8 Characters?

How Full Is Each TLD at 8 Characters?

What Are Eight-Character Domain Names Worth?

Explore Eight-Character Availability by TLD

How Are These Combination Counts Calculated?

Frequently Asked Questions

How many possible 8-character domain names exist?

Are 8-character domains valuable?

Which TLDs still have 8-character domains available?

What does the DNSSEC percentage mean for 8-character domains?

How many 8-character domains are registered across all TLDs?

What is the difference between alphabetic and alphanumeric domain combinations?

Where can I find available 8-character domain names?