Reference Data
Area Code Directory
Area Code 748 — Colorado, Colorado

Area Code 748 — Colorado, Colorado

Active

Data last updated: March 10, 2026

State
Colorado
Country
US
Timezone
Assigned
January 1, 1947
Exchanges (NXX)
786
Carriers
0
Rate Centers
0
Overlay
Yes — 970

Rate Centers

Exchange Listings (NXX)

NPA-NXX Carrier Rate Center Type LATA Status
748-200 Landline active
748-201 Landline active
748-202 Landline active
748-203 Landline active
748-204 Landline active
748-205 Landline active
748-206 Landline active
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748-362 Landline active
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748-369 Landline active
748-370 Landline active
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748-375 Landline active
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748-535 Landline active
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748-617 Landline active
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748-619 Landline active
748-620 Landline active
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748-630 Landline active
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748-728 Landline active
748-729 Landline active
748-730 Landline active
748-731 Landline active
748-732 Landline active
748-733 Landline active
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748-735 Landline active
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748-737 Landline active
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748-740 Landline active
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748-750 Landline active
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748-770 Landline active
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748-901 Landline active
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748-999 Landline active

Area code 748 shares its geographic region with the following overlay area codes:

970