Carrier lookup — USA fast a7
Instantly identify the mobile carrier for US phone numbers, compare top-up options, and discover best-fit plans. Built for speed and accuracy across major carriers.
How our lookup works
We query aggregated carrier datasets and number portability records to return the current serving carrier and suggested top-up vendors. Results include carrier name, network type (GSM/CDMA/LTE/5G), and recommended refill options.
- Fast — results in seconds
- Accurate — cross-checked sources
- Practical — shows refill and plan links
Carrier snapshots
Carrier A (Nationwide)
Strong coverage, competitive top-up credits.
Carrier B (Urban focus)
Good urban speeds and generous data add-ons.
MVNOs & Prepaid
Budget-friendly refill options across MVNOs.
Tools & quick actions
FAQ — Carrier lookup
Yes — we provide carrier routing and publicly-available portability information. We comply with US regulations and privacy policies; do not submit sensitive personal data.
Results reflect the last-known serving carrier and number portability records. Ported numbers may show the original carrier in some datasets — we indicate confidence levels in results.
We link to trusted top-up vendors and provide comparisons; transactions occur on partner sites. Always verify vendor terms before purchase.
Quick comparison
| Provider | Coverage | Typical Top-up | Best for |
|---|---|---|---|
| Carrier A | Nationwide | $10–$50 | Unlimited plans |
| Carrier B | Urban & Suburbs | $5–$45 | High-speed data |
| MVNOs | Varies | $3–$30 | Budget & Pay-as-you-go |
User stories
Alex P. — "Found the carrier and saved time refilling for an MVNO number. Results were instant."
Resources & guides
Guide: Choosing the right top-up
Step-by-step tips to pick the best top-up vendor and avoid fees.
Guide: Understanding portability
Why a number may show a different original carrier and how we detect ported numbers.