Is co.jp or registrar-servers.com more popular?

registrar-servers.com is used by more websites in our catalog: 205 use co.jp and 4,623 use registrar-servers.com.

Does co.jp or registrar-servers.com have higher-authority sites?

co.jp sites have the higher median Ahrefs Domain Rating (co.jp: 60, registrar-servers.com: 8).

Is co.jp or registrar-servers.com growing faster?

Between 2026-06 and 2026-07, co.jp went from 0.03% to 0.02% of all tracked sites, while registrar-servers.com went from 0.58% to 0.52%. co.jp is gaining ground faster in our index.

Can a site use both co.jp and registrar-servers.com?

No. A site runs a single email host, so co.jp and registrar-servers.com are mutually exclusive.

Where does this co.jp vs registrar-servers.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.

co.jp vs registrar-servers.com — Site Stats Database

co.jp vs registrar-servers.com

A side-by-side comparison of two email hosting providers, based on the 736,999 Email Host sites tracked by Site Stats Database.

Last updated July 1, 2026

Metric	co.jp	registrar-servers.com
Websites	205	4,623
Market share	0.03%	0.63%
Share of top 10K sites	0.01%	0.11%

Rank	#97	#15

Median DR	60	8

Average DR	59	15

Median keywords	145	595

Median referring domains	2,315	94

Median domain age	26 yrs	4 yrs

Average domain age	23 yrs	5 yrs

Average monthly traffic	19,427	16,601

Combined monthly traffic	3,982,522	76,748,227

yahoo.co.jp
LanguageJapanese
DR (Ahrefs)93
Total Keywords128,587
Referring Domains376,405
Domain Age6 yrs
Traffic (Jun 2026)1,352,299
Traffic Trend
Technologyco.jp
kinokuniya.com
Language
DR (Ahrefs)74
Total Keywords27,138
Referring Domains14,841
Domain Age31 yrs
Traffic (Jun 2026)676,555
Traffic Trend
Technology
nissan-global.com
LanguageEnglish
DR (Ahrefs)79
Total Keywords15,856
Referring Domains16,759
Domain Age25 yrs
Traffic (Jun 2026)500,792
Traffic Trend
Technology
gran-turismo.com
LanguageEnglish
DR (Ahrefs)73
Total Keywords7,411
Referring Domains15,247
Domain Age26 yrs
Traffic (Jun 2026)233,593
Traffic Trend
Technology
luft.co.jp
LanguageJapanese
DR (Ahrefs)64
Total Keywords14,422
Referring Domains2,475
Domain Age2 yrs
Traffic (Jun 2026)133,990
Traffic Trend
Technology
mlcjapanese.co.jp
LanguageJapanese
DR (Ahrefs)35
Total Keywords4,140
Referring Domains1,126
Domain Age26 yrs
Traffic (Jun 2026)96,861
Traffic Trend
Technology
daiso-sangyo.co.jp
Language
DR (Ahrefs)74
Total Keywords638
Referring Domains6,483
Domain Age26 yrs
Traffic (Jun 2026)93,764
Traffic Trend
Technology
tokyotower.co.jp
Language
DR (Ahrefs)74
Total Keywords1,037
Referring Domains7,686
Domain Age28 yrs
Traffic (Jun 2026)73,535
Traffic Trend
Technology
libertywalk.co.jp
LanguageJapanese
DR (Ahrefs)56
Total Keywords7,875
Referring Domains3,025
Domain Age23 yrs
Traffic (Jun 2026)65,571
Traffic Trend
Technology
yomiuri.co.jp
LanguageJapanese
DR (Ahrefs)89
Total Keywords17,210
Referring Domains110,270
Domain Age31 yrs
Traffic (Jun 2026)52,047
Traffic Trend
Technology

Website	Language	DR (Ahrefs)	Total Keywords	Referring Domains	Domain Age	Traffic (Jun 2026)	Traffic Trend	Technology
yahoo.co.jp	Japanese	93	128,587	376,405	6 yrs	1,352,299		co.jp

currenttimeutc.com
LanguageEnglish
DR (Ahrefs)6
Total Keywords44,476
Referring Domains375
Domain Age3 yrs
Traffic (Jun 2026)2,820,351
Traffic Trend
Technologyregistrar-servers.com
icdcodes.ai
Language
DR (Ahrefs)15
Total Keywords155,300
Referring Domains703
Domain Age1 yr
Traffic (Jun 2026)2,640,346
Traffic Trend
Technology
goto-restaurants.com
LanguageEnglish
DR (Ahrefs)53
Total Keywords516,971
Referring Domains1,055
Domain Age1 yr
Traffic (Jun 2026)2,211,020
Traffic Trend
Technology
slithergame.io
LanguageEnglish
DR (Ahrefs)53
Total Keywords3,616
Referring Domains1,885
Domain Age
Traffic (Jun 2026)1,714,766
Traffic Trend
Technology
bg3.wiki
LanguageEnglish
DR (Ahrefs)51
Total Keywords72,593
Referring Domains3,295
Domain Age4 yrs
Traffic (Jun 2026)1,417,526
Traffic Trend
Technologyregistrar-servers.com
tankathon.com
LanguageEnglish
DR (Ahrefs)60
Total Keywords45,089
Referring Domains4,451
Domain Age12 yrs
Traffic (Jun 2026)1,393,122
Traffic Trend
Technology
ratemycourses.io
LanguageEnglish
DR (Ahrefs)22
Total Keywords3,590
Referring Domains319
Domain Age5 yrs
Traffic (Jun 2026)1,170,997
Traffic Trend
Technology
wordswithfriendscheat.io
LanguageEnglish
DR (Ahrefs)27
Total Keywords2,890
Referring Domains671
Domain Age8 yrs
Traffic (Jun 2026)1,116,251
Traffic Trend
Technology
googlesnakemods.com
LanguageEnglish
DR (Ahrefs)35
Total Keywords749
Referring Domains531
Domain Age2 yrs
Traffic (Jun 2026)1,106,621
Traffic Trend
Technology
mapcomplete.org
LanguageEnglish
DR (Ahrefs)60
Total Keywords2,287
Referring Domains394
Domain Age2 yrs
Traffic (Jun 2026)1,085,753
Traffic Trend
Technology