Area Code983

Colorado, United States

Mountain Time

10:02 AM

Area Code

983

State / Province

Colorado

Country

United States

Time Zone

Mountain Time

Cities and Communities Served

DeckersDenverFort LuptonLongmontRoggenStrasburg

Area code 983 covers 6 cities and communities across Colorado, based on telephone company rate center data.

tel: Link Format

Use the E.164 format for clickable phone links (RFC 3966):

<a href="tel:+19835550100">+19835550100</a>
<a href="tel:+19835550199">+19835550199</a>
Full tel: URI guide
View all United States area codes on map →

Check a 983 Number

Look up which exchange in Colorado a specific 983 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.

Prefix Blocks (NPA-NXX)

44 active prefixes in this area code, assigned as 406 thousands-blocks — pooling splits one prefix across several carriers, so each block is listed separately with the rate centre it is homed to, its carrier of record, and the switch that serves it.

Showing blocks 1–100 of 406

NPA-NXXBlockRate centreTypeCarrier (OCN)SwitchLATALIRDates
983-2000LongmontLandline or VoIPTELNYX LLC (073H)DNVTCOZI6MD656——
983-2001LongmontLandline or VoIPNUSO, LLC (732J)DNVTCOZIGMD656——
983-2002LongmontLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2003LongmontLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2004LongmontLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2005LongmontLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2006LongmontLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2007LongmontLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2008LongmontLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2009LongmontLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-200ALongmontLandline or VoIPNUSO, LLC (732J)DNVTCOZIGMD656——
983-2010DenverLandline or VoIPTELEPORT COMMUNICATIONS AMERICA, LLC - CO (7378)FTCLCOMAAMD656——
983-2011DenverLandline or VoIPTELEPORT COMMUNICATIONS AMERICA, LLC - CO (7378)FTCLCOMAAMD656——
983-2012DenverLandline or VoIPTELEPORT COMMUNICATIONS AMERICA, LLC - CO (7378)FTCLCOMAAMD656——
983-2013DenverLandline or VoIPTELEPORT COMMUNICATIONS AMERICA, LLC - CO (7378)FTCLCOMAAMD656——
983-2014DenverLandline or VoIPTELEPORT COMMUNICATIONS AMERICA, LLC - CO (7378)FTCLCOMAAMD656——
983-2015DenverLandline or VoIPTELEPORT COMMUNICATIONS AMERICA, LLC - CO (7378)FTCLCOMAAMD656——
983-2016DenverLandline or VoIPTELEPORT COMMUNICATIONS AMERICA, LLC - CO (7378)FTCLCOMAAMD656——
983-2017DenverLandline or VoIPTELEPORT COMMUNICATIONS AMERICA, LLC - CO (7378)FTCLCOMAAMD656——
983-2018DenverLandline or VoIPTELEPORT COMMUNICATIONS AMERICA, LLC - CO (7378)FTCLCOMAAMD656——
983-2019DenverLandline or VoIPTELEPORT COMMUNICATIONS AMERICA, LLC - CO (7378)FTCLCOMAAMD656——
983-201ADenverLandline or VoIPTELEPORT COMMUNICATIONS AMERICA, LLC - CO (7378)FTCLCOMAAMD656——
983-202ADenverWirelessSHELCOMM (0051)PGSPCO290MD656——
983-2030DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2031DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2032DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2033DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2034DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2035DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2036DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2037DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2038DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2039DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-203ADenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2040DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2041DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2042DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2043DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-2044DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-2045DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-2046DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-2047DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-2048DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-2049DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-204ADenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-205AStrasburgWirelessSHELCOMM (0051)PGSPCO290MD656——
983-206AFort LuptonWirelessSHELCOMM (0051)PGSPCO290MD656——
983-2070LongmontLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2071LongmontLandline or VoIPNUSO, LLC (732J)DNVTCOZIGMD656——
983-2072LongmontLandline or VoIPNUSO, LLC (732J)DNVTCOZIGMD656——
983-2073LongmontLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2074LongmontLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2075LongmontWirelessT-MOBILE USA, INC. (6529)DNVRCOII3MD656——
983-2076LongmontLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2077LongmontLandline or VoIPBANDWIDTH.COM CLEC, LLC - CO (078F)DNVRCOMAXGZ656——
983-2078LongmontLandline or VoIPBANDWIDTH.COM CLEC, LLC - CO (078F)DNVRCOMAXGZ656——
983-2079LongmontLandline or VoIPBANDWIDTH.COM CLEC, LLC - CO (078F)DNVRCOMAXGZ656——
983-207ALongmontLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2080DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-2081DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-2082DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-2083DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-2084DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-2085DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-2086DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-2087DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-2088DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-2089DenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-208ADenverWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——
983-2090Fort LuptonLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2091Fort LuptonLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2097Fort LuptonWirelessT-MOBILE USA, INC. (6529)—656——
983-2098Fort LuptonLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2099Fort LuptonWirelessT-MOBILE USA, INC. (6529)DNVRCOII3MD656——
983-209AFort LuptonWirelessT-MOBILE USA, INC. (6529)DNVRCOII3MD656——
983-2100DenverLandline or VoIPBANDWIDTH.COM CLEC, LLC - CO (078F)DNVRCOMAXGZ656——
983-2101DenverLandline or VoIPBANDWIDTH.COM CLEC, LLC - CO (078F)DNVRCOMAXGZ656——
983-2102DenverLandline or VoIPBANDWIDTH.COM CLEC, LLC - CO (078F)DNVRCOMAXGZ656——
983-2103DenverLandline or VoIPBANDWIDTH.COM CLEC, LLC - CO (078F)DNVRCOMAXGZ656——
983-2104DenverLandline or VoIPBANDWIDTH.COM CLEC, LLC - CO (078F)DNVRCOMAXGZ656——
983-2105DenverLandline or VoIPBANDWIDTH.COM CLEC, LLC - CO (078F)DNVRCOMAXGZ656——
983-2106DenverLandline or VoIPBANDWIDTH.COM CLEC, LLC - CO (078F)DNVRCOMAXGZ656——
983-2107DenverLandline or VoIPBANDWIDTH.COM CLEC, LLC - CO (078F)DNVRCOMAXGZ656——
983-2108DenverLandline or VoIPBANDWIDTH.COM CLEC, LLC - CO (078F)DNVRCOMAXGZ656——
983-2109DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-210ADenverLandline or VoIPBANDWIDTH.COM CLEC, LLC - CO (078F)DNVRCOMAXGZ656——
983-2120DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2121DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2122DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2123DenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2124DenverWirelessONVOY SPECTRUM, LLC (624H)DNVRCOSOFMD656——
983-2125DenverWirelessONVOY SPECTRUM, LLC (624H)DNVRCOSOFMD656——
983-2126DenverWirelessONVOY SPECTRUM, LLC (624H)DNVRCOSOFMD656——
983-2127DenverWirelessONVOY SPECTRUM, LLC (624H)DNVRCOSOFMD656——
983-2128DenverWirelessONVOY SPECTRUM, LLC (624H)DNVRCOSOFMD656——
983-2129DenverLandline or VoIPNUSO, LLC (732J)DNVRCOMA53Z656——
983-212ADenverLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2130LongmontLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2131LongmontLandline or VoIPONVOY, LLC - CO (026D)DENVER656——
983-2132LongmontWirelessNEW CINGULAR WIRELESS PCS, LLC (6010)DNVRCOMD4MD656——

Search and page through all 406 blocks →

Area Code 983 Numbering Data

Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.

Assigned Prefixes

44

Assignment Blocks

406

Rate Centers

6

Carriers of Record

26

Line Types

TypeBlocksShare
Landline51%
Landline or VoIP21854%
Wireless18345%

Carriers of Record

CarrierBlocks
ONVOY, LLC - CO121
NEW CINGULAR WIRELESS PCS, LLC78
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO69
BANDWIDTH.COM CLEC, LLC - CO20
WIDE VOICE, LLC - CO16
BOOST SUBSCRIBERCO L.L.C.15
TELEPORT COMMUNICATIONS AMERICA, LLC - CO15
ONVOY SPECTRUM, LLC14
NUSO, LLC9
HD CARRIER LLC7
16 other carriers42

Carrier of record for each block. Numbers ported to another carrier keep their original block assignment, so this is not a lookup of who serves a given number today.

Prefixes by Rate Center

Rate CenterPrefixesBlocks
Denver30312
Longmont769
Fort Lupton313
Strasburg24
Deckers15
Roggen13

A rate center is the telephone exchange area a number is homed to. It sets local calling boundaries, and is not the caller's current location.

LATA
656
Incumbent Carriers
QWEST CORPORATION, ROGGEN TEL. COOP. CO., STRASBURG TEL. CO.

About Area Code 983

Area code 983 is a North American Numbering Plan (NANP) telephone area code assigned to Colorado, United States. It is one of 6 area codes serving Colorado. As population and demand for phone numbers grew, the region was divided into multiple numbering plan areas to avoid exhausting the available 7-digit number pool.

Is 983 a valid area code?

Yes. 983 is an active North American Numbering Plan (NANP) area code, currently assigned to Colorado, United States. It is safe to answer or dial calls using this area code.

Where is area code 983?

Area code 983 covers 6 cities and communities in Colorado, including Deckers, Denver, Fort Lupton, Longmont, Roggen, and 1 more localities. This is based on telephone company rate center data — the geographic areas carriers use to determine local calling boundaries and to assign numbers when a business or individual requests a phone number in a specific city.

What time zone is area code 983?

All numbers in the 983 area code observe Mountain Time (IANA timezone: America/Denver). Mountain Time is UTC−7 in winter (MST) and UTC−6 in summer (MDT). When placing a call to a 983 number from a different time zone, check the current local time above to avoid calling outside of business hours.

How do I dial a 983 number?

From within Colorado, dial the 7-digit local number directly if calling within the same rate center, or dial 1 + 983 + 7-digit number for long-distance calls within North America. From outside the US or Canada, dial your country's international exit code followed by 1 983 XXX XXXX. The country code for both the United States and Canada in NANP is +1.

Formatting 983 phone numbers

Format 983 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +19835550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.

Other Area Codes in Colorado

303719720748970