Godaddy 76 million domains, 20 million customers.
About 4 domains per customer.
Namecheap 12 million domains, 2 million customers.
About 6 domains per customer.
These are the top 10 gTLD registrars by count for May 2021:
| GoDaddy.com, LLC | 65,734,606 |
| NameCheap, Inc. | 12,568,285 |
| Tucows Domains Inc. | 10,606,680 |
| Network Solutions, LLC | 6,864,226 |
| Google LLC | 6,407,480 |
| Alibaba Cloud Computing (Beijing) Co., Ltd. | 6,168,054 |
| PDR Ltd. d/b/a PublicDomainRegistry.com | 5,242,927 |
| eNom, LLC | 4,939,971 |
| 1&1 IONOS SE | 4,824,985 |
| GMO Internet, Inc. d/b/a Onamae.com | 4,561,358 |
The problem is that some operations like Godaddy and Newfold Digital have multiple ICANN registrar accreditations. Godaddy bought Uniregistry's registar business and that's now a Godaddy registrar. Newfold owns Network Solutions and Public Domain Registry. The numbers of domain names per registrant is a bit obscure. Some registries publish the breakdowns but a lot of them have declined to publish it in the last few years as it could be used to check how many Mom and Pop registrants were active in a TLD. In this respect, not all TLDs are equal and having a high number of domainer and speculative registrations in a TLD is considered a bad thing for a newly launched TLD. Epik has been trying a lot of business ideas over the last ten years (some successful and some not so) but the bulk of registrations are still concentrated on the large registrar operators.
Regards...jmcc