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MASTONSTRE.COM — what is this charge?

MASTONSTRE.COM is how this charge is printed on your statement. It is typically a recurring subscription charge. Our records suggest a possible match, shown below — it has not been confirmed against this descriptor. Record last updated March 29, 2026
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Estimated
You bought from
MASTONSTRE.COM
◆ Estimated record
This appears to be a charge from a merchant with 'AST' prefix, possibly indicating a payment processor or abbreviated company name.
Shows on your statement as MASTONSTRE.COM
Business
MASTONSTRE.COM
Website
http://www.ast.org
Category
Telecom
MCC
4899 — Communications Services, not Elsewhere Classified
Address
6 W Dry Creek Cir #200, Littleton, CO 80120, USA
⤢ View map
AI-identified location — not yet merchant-verified
Estimated record. The details above were compiled from public sources and AI research — they have not been confirmed by MASTONSTRE.COM. Treat them as a starting point, not an official source. When a merchant claims their record, the information becomes merchant-supplied and is marked ✓ Verified.
Unclaimed record · MASTONSTRE.COM has been identified as the merchant but has not yet claimed this listing · Is this your business? Claim it
Resolve it yourself — fix this purchase
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Contact support — reach a person
Some details were AI-identified from public sources and may not yet be merchant-verified.
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Customer support: http://www.ast.org · AI-identified · updated March 29, 2026
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Common questions about this charge

Is the MASTONSTRE.COM charge legitimate or fraud?

MASTONSTRE.COM is a recognized billing descriptor associated with MASTONSTRE.COM and often appears as a recurring subscription payment. That identification tells you who the charge is from — it cannot by itself confirm that your specific transaction was authorized. If you don't recognize it, first check whether someone who shares your card made the purchase, then contact MASTONSTRE.COM directly before disputing the charge with your bank.

How do I contact MASTONSTRE.COM about this charge?

Call MASTONSTRE.COM at (303) 694-9130. Visit http://www.ast.org for support.

How do I cancel or get a refund from MASTONSTRE.COM?

Use the Request a Refund or Cancel Subscription options on this page to start a request, or skip a month or pause the subscription instead of cancelling outright. You can also call MASTONSTRE.COM at (303) 694-9130.

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