Fun with data: Top Mailbox Providers in Japan


Here’s a fun-but-simple exercise: Take the list of top 10 million domains. Look for all of the domains for a given country’s TLD, in this case, .jp. Let’s look at the MX records for those and see who hosts mail for the most Japanese domains. This doesn’t mean that a given mailbox provider hosts the largest number of mailboxes; it just means that a significant number of domains have MX records pointed at a given provider.

This is not a region where I am very familiar with the providers. But I do note that are our old friends Google and Microsoft are here, showing up number three and number six, respectively. Not leading the pack, but still significantly represented.

Here are the top twenty five mailbox providers in Japan, ranked using this methodology:
  1. lolipop.jp (10915 domains)
  2. secure.ne.jp (6783 domains)
  3. google.com (5663 domains)
  4. sakura.ne.jp (4201 domains)
  5. aams4.jp (3987 domains)
  6. outlook.com (3129 domains)
  7. hetemail.jp (3101 domains)
  8. gmoserver.jp (2610 domains)
  9. heteml.jp (2259 domains)
  10. onamae.ne.jp (2027 domains)
  11. ocn.ad.jp (1920 domains)
  12. alpha-prm.jp (1640 domains)
  13. conoha.ne.jp (1573 domains)
  14. kagoya.net (1026 domains)
  15. xserver.jp (973 domains)
  16. securemx.jp (892 domains)
  17. makeshop.jp (878 domains)
  18. wadax-sv.jp (709 domains)
  19. fsi.ne.jp (517 domains)
  20. admiral.ne.jp (432 domains)
  21. amazonaws.com (427 domains)
  22. shop-pro.jp (375 domains)
  23. drive.ne.jp (300 domains)
  24. cybermail.jp (286 domains)
  25. trendmicro.com (285 domains)
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