ABBREX

• 441. puzzleanddragonsforum.com (1)
• 442. pwnnetwork.net (1)
• 443. pypy.org (2)
• 444. queentorrent.com (2)
• 445. racv.com.au (1)
• 446. radioreference.com (2)
• 447. rationalwiki.org (1)
• 448. rcnitrotalk.com (5)
• 449. realsimple.com (1)
• 450. reddit.com (40)
• 451. redicecreations.com (1)
• 452. rengineeringjobs.com (1)
• 453. uk.reuters.com (1)
• 454. rigzone.com (29)
• 455. risenc.org (1)
• 456. rmef.org (1)
• 457. roadracingworld.com (1)
• 458. rockpapershotgun.com (4)
• 459. rollmodels.net (1)
• 460. rbc.ru (1)

You can click on a site to see its acronyms / abbreviations.
Numbers in parantheses show the number of acronyms / abbreviations for that site.