557 phone numbers available to buy right now

Live inventory of St. Louis, MO (557) numbers, pulled directly from our carrier network and last updated November 5, 2026 at 2:34 AM UTC. There is no per-number price or markup: every number below is included with a Phone2 plan from $7/month on annual billing, with calling, SMS, a team inbox, and mobile + desktop apps. Activation is instant.

(557) 204-6343VoiceSMSFax
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(557) 204-6175VoiceSMSFax
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(557) 200-0336VoiceSMSFax
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(557) 204-7003VoiceSMSFax
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(557) 204-6267VoiceSMSFax
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(557) 204-7729VoiceSMSFax
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(557) 204-7732VoiceSMSFax
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(557) 204-6408VoiceSMSFax
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(557) 204-7871VoiceSMSFax
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(557) 204-6317VoiceSMSFax
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(557) 200-0475VoiceSMSFax
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(557) 204-6070VoiceSMSFax
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(557) 200-0266VoiceSMSFax
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(557) 200-0375VoiceSMSFax
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(557) 204-6276VoiceSMSFax
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(557) 204-6212VoiceSMSFax
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(557) 200-0015VoiceSMSFax
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(557) 200-0255VoiceSMSFax
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(557) 200-0017VoiceSMSFax
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(557) 204-6323VoiceSMSFax
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(557) 204-6395VoiceSMSFax
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(557) 204-6398VoiceSMSFax
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(557) 204-6300VoiceSMSFax
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(557) 204-6401VoiceSMSFax
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(557) 204-6326VoiceSMSFax
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(557) 204-6258VoiceSMSFax
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(557) 204-6288VoiceSMSFax
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(557) 204-6295VoiceSMSFax
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(557) 200-0596VoiceSMSFax
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(557) 200-0175VoiceSMSFax
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Search all 557 numbers About the 557 area code

How buying a 557 number works

Pick any number above, or search the full 557 inventory.
Sign up for a Phone2 plan (from $7/month on annual billing). The number is included, with no one-time purchase fee.
Start calling and texting immediately from the mobile, desktop, or web app.

Unlike number marketplaces that sell 557 numbers for $99 or more one-time, Phone2 includes the number with the phone service itself. 30-day refund guarantee, and you can port the number out any time.