The statistic depicts the mobile to landline telephone numbers remaining in the porting database from 2003 to 2009 in the United States. In the fourth quarter of 2008, there were 171,000 telephone numbers in the U.S. porting database.
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Federal Communications Commission. (September 30, 2010). Number of mobile to landline telephone numbers remaining in the porting database from 2003 to 2009 in the United States (in 1,000) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved August 01, 2026, from /statistics/188512/mobile-to-landline-telephone-numbers-in-the-us-porting-database-since-2003/
Federal Communications Commission. "Number of mobile to landline telephone numbers remaining in the porting database from 2003 to 2009 in the United States (in 1,000)." Chart. September 30, 2010. ÌÇÐÄÆƽâ°æ. Accessed August 01, 2026. /statistics/188512/mobile-to-landline-telephone-numbers-in-the-us-porting-database-since-2003/
Federal Communications Commission. (2010). Number of mobile to landline telephone numbers remaining in the porting database from 2003 to 2009 in the United States (in 1,000). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: August 01, 2026. /statistics/188512/mobile-to-landline-telephone-numbers-in-the-us-porting-database-since-2003/
Federal Communications Commission. "Number of Mobile to Landline Telephone Numbers Remaining in The Porting Database from 2003 to 2009 in The United States (in 1,000)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 30 Sep 2010, /statistics/188512/mobile-to-landline-telephone-numbers-in-the-us-porting-database-since-2003/
Federal Communications Commission, Number of mobile to landline telephone numbers remaining in the porting database from 2003 to 2009 in the United States (in 1,000) ÌÇÐÄÆƽâ°æ, /statistics/188512/mobile-to-landline-telephone-numbers-in-the-us-porting-database-since-2003/ (last visited August 01, 2026)
Number of mobile to landline telephone numbers remaining in the porting database from 2003 to 2009 in the United States (in 1,000) [Graph], Federal Communications Commission, September 30, 2010. [Online]. Available: /statistics/188512/mobile-to-landline-telephone-numbers-in-the-us-porting-database-since-2003/
