Diamond Bar, California Area Codes

Map of Diamond Bar

Local time – 1 timezone

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Mountain timezone

Prefixes – 28 codes

Prefix
Type
Location
Carrier
Assigned
Landline
Charter Fiberlink Ca-cco, LLC - CA
2009/03/27
(909) 274-0
Landline
Bandwidth.com CLEC, LLC - CA
2010/01/29
(909) 274-1
Landline
Frontier California Inc.
2009/11/23
(909) 274-2
Landline
Charter Fiberlink Ca-cco, LLC - CA
2009/09/29
(909) 274-3
Landline
Frontier California Inc.
2009/11/23
(909) 274-4
Landline
Charter Fiberlink Ca-cco, LLC - CA
2009/09/29
(909) 274-5
Landline
Charter Fiberlink Ca-cco, LLC - CA
2009/09/29
(909) 274-6
Landline
Charter Fiberlink Ca-cco, LLC - CA
2009/09/29
(909) 274-7
Landline
Time Warner Cbl Info Svcs (Ca) DBA Time Warner Cab
2009/08/19
(909) 274-8
Wireless
New Cingular Wireless PCS, LLC
2010/06/15
(909) 274-9
Landline
Bandwidth.com CLEC, LLC - CA
2010/01/29
Landline
Onvoy, LLC - CA
2016/05/11
(909) 323-0
Landline
Onvoy, LLC - CA
2016/07/13
(909) 323-1
Landline
Onvoy, LLC - CA
2016/07/13
(909) 323-2
Landline
Bandwidth.com CLEC, LLC - CA
2016/07/28
(909) 323-3
Landline
Onvoy, LLC - CA
2016/05/23
(909) 323-4
Landline
Onvoy, LLC - CA
2016/05/23
(909) 323-5
Landline
Onvoy, LLC - CA
2016/09/02
(909) 323-6
Landline
Onvoy, LLC - CA
2016/09/02
(909) 323-7
Landline
Onvoy, LLC - CA
2016/05/16
(909) 323-8
Landline
Onvoy, LLC - CA
2016/05/16
(909) 323-9
Wireless
T-mobile USA, Inc.
2016/08/26
Landline
Bandwidth.com CLEC, LLC - CA
2012/07/23
(909) 345-0
Landline
Bandwidth.com CLEC, LLC - CA
2012/07/23
(909) 345-1
Landline
Bandwidth.com CLEC, LLC - CA
2012/08/13
(909) 345-2
Landline
Onvoy, LLC - CA
2013/02/07
(909) 345-3
Landline
Bandwidth.com CLEC, LLC - CA
2013/06/18
(909) 345-4
Wireless
New Cingular Wireless PCS, LLC
2014/08/29
(909) 345-5
Landline
Onvoy, LLC - CA
2012/12/04
(909) 345-6
Landline
Onvoy, LLC - CA
2012/12/04
(909) 345-7
Landline
Time Warner Cbl Info Svcs (Ca) DBA Time Warner Cab
2013/03/19
(909) 345-8
Landline
Onvoy, LLC - CA
2012/12/04
(909) 345-9
Landline
Peerless Network of California, LLC - CA
2013/03/20
Landline
Level 3 Telecom of California, LP - CA
-
(909) 348-0
Landline
Us Telepacific Corp. - CA
2000/12/08
(909) 348-1
Landline
Level 3 Telecom of California, LP - CA
-
(909) 348-2
Wireless
T-mobile USA, Inc.
2005/09/06
(909) 348-3
Wireless
T-mobile USA, Inc.
2005/09/06
(909) 348-4
Wireless
T-mobile USA, Inc.
2007/10/22
(909) 348-5
Landline
Us Telepacific Corp. - CA
2004/01/20
(909) 348-6
Landline
Pacific Bell (Competitive)
2005/12/21
(909) 348-7
Landline
Level 3 Communications, LLC - AK
2004/11/19
(909) 348-8
Landline
Paetec Communications, Inc. - CA
2009/03/17
(909) 348-9
Landline
Paetec Communications, Inc. - CA
2002/05/23
Landline
Mcimetro Access Transmission Services LLC
2013/07/31
(909) 378-0
Wireless
New Cingular Wireless PCS, LLC
2014/04/01
(909) 378-1
Landline
Pacific Bell (Competitive)
2013/10/31
(909) 378-2
Landline
Us Telepacific Corp. - CA
2013/08/14
(909) 378-3
Landline
Level 3 Communications, LLC - AK
2014/02/27
(909) 378-4
Landline
Mcimetro Access Transmission Services LLC
2013/07/31
(909) 378-5
Landline
Bandwidth.com CLEC, LLC - CA
2014/06/19
(909) 378-6
Landline
Bandwidth.com CLEC, LLC - CA
2014/06/19
(909) 378-7
Landline
Level 3 Telecom of California, LP - CA
2013/08/23
(909) 378-8
Landline
Onvoy, LLC - CA
2013/11/01
(909) 378-9
Landline
Onvoy, LLC - CA
2013/11/01
(909) 396
Landline
Frontier California Inc.
-
(909) 444
Landline
Frontier California Inc.
-
(909) 468
Landline
Frontier California Inc.
-
Landline
Time Warner Cbl Info Svcs (Ca) DBA Time Warner Cab
2014/10/20
(909) 551-0
Landline
Time Warner Cbl Info Svcs (Ca) DBA Time Warner Cab
2014/10/20
(909) 551-1
Wireless
New Cingular Wireless PCS, LLC
2014/10/24
(909) 551-2
Landline
Onvoy, LLC - CA
2014/11/26
(909) 551-3
Landline
Onvoy, LLC - CA
2014/11/26
(909) 551-4
Landline
Onvoy, LLC - CA
2014/11/26
(909) 551-5
Wireless
T-mobile USA, Inc.
2015/04/20
(909) 551-6
Wireless
T-mobile USA, Inc.
2015/04/20
(909) 551-7
Landline
Paetec Communications, Inc. - CA
2014/12/18
(909) 551-8
Wireless
New Cingular Wireless PCS, LLC
2015/06/18
(909) 551-9
Wireless
T-mobile USA, Inc.
2015/02/05
Landline
Teleport Communications America - ID - LLC
-
(909) 569-0
Landline
Teleport Communications America - ID - LLC
-
(909) 569-1
Landline
Level 3 Communications, LLC - AK
2001/09/17
(909) 569-2
Wireless
T-mobile USA, Inc.
2003/05/16
(909) 569-3
Wireless
T-mobile USA, Inc.
2004/06/10
(909) 569-4
Wireless
T-mobile USA, Inc.
2004/08/31
(909) 569-5
Wireless
T-mobile USA, Inc.
2004/08/31
(909) 569-6
Landline
Xo California, Inc.
2004/11/23
(909) 569-7
Wireless
New Cingular Wireless PCS, LLC
2004/12/08
(909) 569-8
Wireless
T-mobile USA, Inc.
2005/01/06
(909) 569-9
Wireless
T-mobile USA, Inc.
2005/04/01
(909) 594
Landline
Frontier California Inc.
-
(909) 595
Landline
Frontier California Inc.
-
(909) 598
Landline
Frontier California Inc.
-
Landline
Mcimetro Access Transmission Services LLC
-
(909) 610-0
Wireless
New Cingular Wireless PCS, LLC
2008/07/03
(909) 610-1
Landline
Onvoy, LLC - CA
2010/02/10
(909) 610-2
Landline
Mcimetro Access Transmission Services LLC
-
(909) 610-3
Landline
Onvoy, LLC - CA
2008/05/02
(909) 610-4
Landline
Paetec Communications, Inc. - CA
2003/10/21
(909) 610-5
Wireless
T-mobile USA, Inc.
2007/05/30
(909) 610-6
Landline
Level 3 Communications, LLC - AK
2008/11/24
(909) 610-7
Wireless
T-mobile USA, Inc.
2005/10/07
(909) 610-8
Landline
Level 3 Communications, LLC - AK
2008/11/24
(909) 610-9
Landline
Bandwidth.com CLEC, LLC - CA
2011/05/06
Landline
Frontier California Inc.
-
(909) 612-0
Landline
Frontier California Inc.
-
(909) 612-1
Landline
Frontier California Inc.
-
(909) 612-2
Landline
Frontier California Inc.
-
(909) 612-3
Landline
Frontier California Inc.
-
(909) 612-4
Landline
Frontier California Inc.
-
(909) 612-5
Landline
Frontier California Inc.
-
(909) 612-6
Landline
Frontier California Inc.
-
(909) 612-7
Landline
Charter Fiberlink Ca-cco, LLC - CA
2005/09/28
(909) 612-8
Landline
Xo California, Inc.
2001/09/17
(909) 612-9
Landline
Onvoy, LLC - CA
2009/02/23
Wireless
New Cingular Wireless PCS, LLC
2018/09/25
(909) 616-0
Landline
Peerless Network of California, LLC - CA
2019/05/22
(909) 616-1
Landline
Bandwidth.com CLEC, LLC - CA
2020/10/15
(909) 616-2
Landline
Twilio International, Inc.
2020/09/09
(909) 616-3
Landline
Mcimetro Access Transmission Services LLC
2019/11/27
(909) 616-4
Landline
Us Telepacific Corp. - CA
2019/03/19
(909) 616-5
Landline
Bandwidth.com CLEC, LLC - CA
2020/10/15
(909) 616-6
Landline
Vonage America LLC
2020/06/11
(909) 616-7
Landline
Vonage America LLC
2020/06/11
(909) 616-8
Wireless
T-mobile USA, Inc.
2018/12/24
(909) 616-9
Wireless
New Cingular Wireless PCS, LLC
2018/09/25
Landline
Bandwidth.com CLEC, LLC - CA
2015/06/23
(909) 655-0
Landline
Bandwidth.com CLEC, LLC - CA
2015/06/23
(909) 655-1
Landline
Bandwidth.com CLEC, LLC - CA
2015/06/23
(909) 655-2
Landline
Us Telepacific Corp. - CA
2015/09/16
(909) 655-3
Landline
Mcimetro Access Transmission Services LLC
2015/10/22
(909) 655-4
Landline
Onvoy, LLC - CA
2016/02/16
(909) 655-5
Landline
Onvoy, LLC - CA
2016/02/16
(909) 655-6
Landline
Time Warner Cbl Info Svcs (Ca) DBA Time Warner Cab
2016/03/07
(909) 655-7
Wireless
New Cingular Wireless PCS, LLC
2015/12/03
(909) 655-8
Wireless
New Cingular Wireless PCS, LLC
2015/10/01
(909) 655-9
Landline
Local Access Services LLC - CA
2015/08/26
Landline
Mpower Communications Corp. - CA
-
(909) 718-0
Landline
Mpower Communications Corp. - CA
-
(909) 718-1
Landline
Mpower Communications Corp. - CA
-
(909) 718-2
Landline
Bandwidth.com CLEC, LLC - CA
2011/05/06
(909) 718-3
Landline
Global Crossing Local Services, Inc. - KY
2006/10/18
(909) 718-4
Landline
Onvoy, LLC - CA
2008/06/16
(909) 718-5
Landline
AT&T - Local
2007/02/16
(909) 718-6
Landline
Mpower Communications Corp. - CA
-
(909) 718-7
Landline
Us Telepacific Corp. - CA
2007/02/15
(909) 718-8
Landline
Us Telepacific Corp. - CA
2007/02/15
(909) 718-9
Wireless
New Cingular Wireless PCS, LLC
2009/04/07
Landline
Onvoy, LLC - CA
2016/10/10
(909) 760-0
Landline
Onvoy, LLC - CA
2017/05/16
(909) 760-1
Landline
Telnyx LLC
2017/05/22
(909) 760-2
Landline
Onvoy, LLC - CA
2016/10/12
(909) 760-3
Landline
Onvoy, LLC - CA
2016/10/12
(909) 760-4
Landline
Onvoy, LLC - CA
2016/10/12
(909) 760-5
Landline
Onvoy, LLC - CA
2016/10/12
(909) 760-6
Landline
Onvoy, LLC - CA
2016/10/12
(909) 760-7
Wireless
New Cingular Wireless PCS, LLC
2017/10/24
(909) 760-8
Wireless
T-mobile USA, Inc.
2018/01/16
(909) 760-9
Wireless
T-mobile USA, Inc.
2016/11/28
Landline
Frontier California Inc.
-
(909) 839-0
Landline
Frontier California Inc.
-
(909) 839-1
Landline
Frontier California Inc.
-
(909) 839-2
Landline
Frontier California Inc.
-
(909) 839-3
Wireless
New Cingular Wireless PCS, LLC
2007/11/09
(909) 839-4
Landline
Xo California, Inc.
2005/06/28
(909) 839-5
Landline
Xo California, Inc.
2005/06/28
(909) 839-6
Landline
Xo California, Inc.
2005/06/28
(909) 839-7
Landline
Frontier California Inc.
-
(909) 839-8
Landline
Frontier California Inc.
-
(909) 839-9
Landline
Centurylink Communications, LLC LA
2015/06/04
Landline
Pacific Bell (Competitive)
-
(909) 859-0
Landline
Bandwidth.com CLEC, LLC - CA
2011/05/06
(909) 859-1
Wireless
New Cingular Wireless PCS, LLC
2014/07/29
(909) 859-2
Landline
Pacific Bell (Competitive)
-
(909) 859-3
Landline
Level 3 Communications, LLC - AK
2003/03/19
(909) 859-4
Wireless
T-mobile USA, Inc.
2006/09/13
(909) 859-5
Wireless
T-mobile USA, Inc.
2003/12/22
(909) 859-6
Landline
Utility Telecom Group, LLC - CA
2006/04/19
(909) 859-7
Landline
Pacific Bell (Competitive)
2004/10/11
(909) 859-8
Landline
Pacific Bell (Competitive)
-
(909) 859-9
Wireless
New Cingular Wireless PCS, LLC
2007/03/01
(909) 860
Landline
Frontier California Inc.
-
(909) 861
Landline
Frontier California Inc.
-
(909) 869
Landline
Frontier California Inc.
-
Landline
Level 3 Communications, LLC - AK
-
(909) 895-0
Landline
Level 3 Communications, LLC - AK
2005/01/21
(909) 895-1
Landline
O1 Communications, Inc. - CA
2004/10/18
(909) 895-2
Landline
O1 Communications, Inc. - CA
2004/10/18
(909) 895-3
Landline
Level 3 Communications, LLC - AK
2005/08/03
(909) 895-4
Landline
Level 3 Communications, LLC - AK
-
(909) 895-5
Unknown
Vodex Communications Corporation - CA
2017/08/15
(909) 895-6
Landline
Level 3 Communications, LLC - AK
2006/05/03
(909) 895-7
Landline
Time Warner Cbl Info Svcs (Ca) DBA Time Warner Cab
2006/08/09
(909) 895-8
Landline
Us Telepacific Corp. - CA
2006/08/04
(909) 895-9
Wireless
New Cingular Wireless PCS, LLC
2006/06/22
Landline
Bandwidth.com CLEC, LLC - CA
2020/10/19
(909) 914-0
Landline
Bandwidth.com CLEC, LLC - CA
2020/10/20
(909) 914-1
Landline
Bandwidth.com CLEC, LLC - CA
2021/02/19
(909) 914-2
Landline
Onvoy, LLC - CA
2021/07/02
(909) 914-3
Landline
Onvoy, LLC - CA
2021/07/02
(909) 914-4
Landline
Onvoy, LLC - CA
2021/07/02
(909) 914-5
Landline
Onvoy, LLC - CA
2021/07/02
(909) 914-6
Landline
Teleport Communications America - ID - LLC
2021/07/23
(909) 914-8
Wireless
T-mobile USA, Inc.
2021/02/22
(909) 914-9
Wireless
T-mobile USA, Inc.
2021/02/22
Landline
Mpower Communications Corp. - CA
-
(909) 978-0
Landline
Mpower Communications Corp. - CA
-
(909) 978-1
Landline
Mpower Communications Corp. - CA
-
(909) 978-2
Landline
Onvoy, LLC - CA
2012/03/21
(909) 978-3
Landline
Teleport Communications America - ID - LLC
2003/09/24
(909) 978-4
Landline
Onvoy, LLC - CA
2007/01/16
(909) 978-5
Landline
Charter Fiberlink Ca-cco, LLC - CA
2012/06/20
(909) 978-6
Landline
Mcimetro Access Transmission Services LLC
2005/09/26
(909) 978-7
Landline
Bandwidth.com CLEC, LLC - CA
2012/02/17
(909) 978-8
Landline
Level 3 Communications, LLC - AK
2006/04/19
(909) 978-9
Landline
Bandwidth.com CLEC, LLC - CA
2010/10/05
Landline
Frontier California Inc.
-
(909) 979-0
Wireless
T-mobile USA, Inc.
2007/08/08
(909) 979-1
Landline
Bandwidth.com CLEC, LLC - CA
2008/10/23
(909) 979-2
Landline
Level 3 Communications, LLC - AK
2005/08/23
(909) 979-3
Landline
Bandwidth.com CLEC, LLC - CA
2010/11/11
(909) 979-4
Wireless
T-mobile USA, Inc.
2004/03/05
(909) 979-5
Landline
Frontier California Inc.
-
(909) 979-6
Landline
Frontier California Inc.
-
(909) 979-7
Wireless
New Cingular Wireless PCS, LLC
2006/10/05
(909) 979-8
Landline
Level 3 Communications, LLC - AK
2006/02/01
(909) 979-9
Landline
Bandwidth.com CLEC, LLC - CA
2010/06/08