| SL | Free High PR Directory Submission Links |
| 496 | http://www.redirectplus.info |
| 497 | http://www.redlavadirectory.com.ar |
| 498 | http://www.redlinker.com |
| 499 | http://www.resonantdirectory.com |
| 500 | http://www.ribcast.com |
| 501 | http://www.richinfodirectory.com |
| 502 | http://www.rockinglinks.com |
| 503 | http://www.royaldirectory.biz |
| 504 | http://www.ruce.org |
| 505 | http://www.saffo.info |
| 506 | http://www.salondugolf.biz |
| 507 | http://www.scotlist.biz |
| 508 | http://www.scraze.net |
| 509 | http://www.search.fenixdirectory.info |
| 510 | http://www.searchdirectory.info |
