Is ac.uk or register.com more popular?

register.com is used by more websites in our catalog: 164 use ac.uk and 4,371 use register.com.

Does ac.uk or register.com have higher-authority sites?

ac.uk sites have the higher median Ahrefs Domain Rating (ac.uk: 74, register.com: 14).

Is ac.uk or register.com growing faster?

Between 2026-06 and 2026-07, ac.uk went from 0.03% to 0.02% of all tracked sites, while register.com went from 0.48% to 0.50%. register.com is gaining ground faster in our index.

Can a site use both ac.uk and register.com?

No. A site runs a single DNS provider, so ac.uk and register.com are mutually exclusive.

Where does this ac.uk vs register.com data come from?

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.

ac.uk vs register.com — Site Stats Database

ac.uk vs register.com

A side-by-side comparison of two dns providers, based on the 840,922 DNS Provider sites tracked by Site Stats Database.

Last updated July 1, 2026

Metric	ac.uk	register.com
Websites	164	4,371
Market share	0.02%	0.52%
Share of top 10K sites	0.08%	0.11%
Share of top 100K sites

Rank	#205	#18

Median DR	74	14

Average DR	71	20

Median keywords	4,454	672

Median referring domains	6,967	170

Median domain age	30 yrs	15 yrs

Average domain age	27 yrs	16 yrs

Average monthly traffic	224,079	31,937

Combined monthly traffic	36,748,893	139,595,431

columbia.edu
Language
DR (Ahrefs)91
Total Keywords761,153
Referring Domains274,583
Domain Age41 yrs
Traffic (Jun 2026)12,983,734
Traffic Trend
Technologyac.uk
ox.ac.uk
LanguageEnglish
DR (Ahrefs)91
Total Keywords293,969
Referring Domains241,652
Domain Age29 yrs
Traffic (Jun 2026)3,502,605
Traffic Trend
Technologyac.uk
st-andrews.ac.uk
LanguageEnglish
DR (Ahrefs)84
Total Keywords52,618
Referring Domains42,437
Domain Age
Traffic (Jun 2026)1,825,038
Traffic Trend
Technology
mathcentre.ac.uk
LanguageEnglish
DR (Ahrefs)52
Total Keywords35,704
Referring Domains2,040
Domain Age30 yrs
Traffic (Jun 2026)1,395,992
Traffic Trend
Technology
open.edu
Language
DR (Ahrefs)81
Total Keywords147,757
Referring Domains32,218
Domain Age29 yrs
Traffic (Jun 2026)1,383,417
Traffic Trend
Technologyac.uk
ed.ac.uk
Language
DR (Ahrefs)89
Total Keywords120,839
Referring Domains104,521
Domain Age30 yrs
Traffic (Jun 2026)1,217,056
Traffic Trend
Technologyac.uk
olemiss.edu
LanguageEnglish
DR (Ahrefs)80
Total Keywords53,128
Referring Domains29,130
Domain Age37 yrs
Traffic (Jun 2026)1,114,931
Traffic Trend
Technology
ucl.ac.uk
LanguageEnglish
DR (Ahrefs)90
Total Keywords137,041
Referring Domains130,914
Domain Age
Traffic (Jun 2026)1,094,211
Traffic Trend
Technologyac.uk
yourgenome.org
LanguageEnglish
DR (Ahrefs)71
Total Keywords32,259
Referring Domains8,119
Domain Age26 yrs
Traffic (Jun 2026)928,859
Traffic Trend
Technology
sussex.ac.uk
LanguageEnglish
DR (Ahrefs)82
Total Keywords35,246
Referring Domains33,657
Domain Age30 yrs
Traffic (Jun 2026)597,165
Traffic Trend
Technology

Website	Language	DR (Ahrefs)	Total Keywords	Referring Domains	Domain Age	Traffic (Jun 2026)	Traffic Trend	Technology
columbia.edu		91	761,153	274,583	41 yrs	12,983,734		ac.uk

streetdirectory.com
LanguageEnglish
DR (Ahrefs)74
Total Keywords782,093
Referring Domains18,256
Domain Age26 yrs
Traffic (Jun 2026)18,720,875
Traffic Trend
Technologyregister.com
cfa.org
LanguageEnglish
DR (Ahrefs)79
Total Keywords23,582
Referring Domains8,989
Domain Age23 yrs
Traffic (Jun 2026)4,661,047
Traffic Trend
Technologyregister.com
saintpatrickscathedral.org
LanguageEnglish
DR (Ahrefs)66
Total Keywords7,669
Referring Domains4,089
Domain Age24 yrs
Traffic (Jun 2026)3,245,937
Traffic Trend
Technology
costumesupercenter.com
Language
DR (Ahrefs)52
Total Keywords52,686
Referring Domains2,654
Domain Age20 yrs
Traffic (Jun 2026)1,975,810
Traffic Trend
Technology
barlouie.com
LanguageEnglish
DR (Ahrefs)59
Total Keywords11,662
Referring Domains2,789
Domain Age23 yrs
Traffic (Jun 2026)1,848,756
Traffic Trend
Technology
cityneighborhoods.nyc
LanguageEnglish
DR (Ahrefs)52
Total Keywords17,135
Referring Domains739
Domain Age10 yrs
Traffic (Jun 2026)1,529,387
Traffic Trend
Technology
studiomoviegrill.com
Language
DR (Ahrefs)59
Total Keywords12,858
Referring Domains2,593
Domain Age26 yrs
Traffic (Jun 2026)1,453,521
Traffic Trend
Technology
alexevenings.com
Language
DR (Ahrefs)40
Total Keywords21,095
Referring Domains581
Domain Age28 yrs
Traffic (Jun 2026)1,382,075
Traffic Trend
Technology
browardclerk.org
LanguageEnglish
DR (Ahrefs)63
Total Keywords15,152
Referring Domains1,856
Domain Age24 yrs
Traffic (Jun 2026)1,289,670
Traffic Trend
Technology
bbcicecream.com
Language
DR (Ahrefs)57
Total Keywords4,155
Referring Domains4,838
Domain Age21 yrs
Traffic (Jun 2026)1,236,197
Traffic Trend
Technology