Regional MVNO: standardising SMS lab tests across three hubs
A mid-sized MVNO replaced spreadsheets and ad-hoc handset checks with one SMS testing workspace—so engineering, roaming, and fraud teams share the same evidence.
Built for telecom teams
Stop jumping between tools just to verify one phone number.
CallVerifier gives your team one workspace for manual verification calls, SMS testing, and Truecaller bulk checks. Less tab switching, cleaner evidence, faster decisions.
CNAM
6+ carriers checked
SMS
Latency & delivery
BULK
Truecaller sweeps
● LIVE · Global Routing Atlas
UPDATED · 14:32:19 UTC
Delivered < 400ms
Delay 400–1000ms
Failed / Timeout
● Carrier hub
01 · Coverage
14 carriers
Major US + UK + IN networks
02 · Latency
247ms
P95 SMS delivery test
03 · Sweep
12.8K
Numbers in last Truecaller bulk
04 · Uptime
99.98%
Trailing 30 days
Field notes
What it looks like on someone else’s network
We anonymise names, but the problems are real: spoofed CNAM at a bank, roaming SMS fights, bulk Truecaller sweeps after a route change. Skim the short version here or read the long form.
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A financial services group needed defensible records when customers reported spoofed numbers—not just “we checked the logs” but artefacts compliance could file with partners.
Inside the console
Everything your verification team needs in one place
No “AI magic” checkbox — just the three workflows our customers actually bill time against: CNAM checks across carriers, SMS delivery across providers and countries, and Truecaller bulk reputation campaigns.
CNAM verification across carriers
Call our device — we tell you exactly how your CNAM displays on AT&T, T-Mobile, Verizon, Truecaller, Hiya, and Robokiller. See spam flags, scam-likely banners, and CNAM mismatches per carrier in one report.
- 6+ carrier CNAM lookups per number
- Spam / scam-likely flag detection
- Historical CNAM drift over time
SMS delivery across providers
Send SMS to our device. We show the exact message that arrived, the time it took to land, the route the provider used — across multiple countries, regions, and languages. Compare provider behaviour side-by-side.
- Latency P50 / P95 per provider
- Multi-country & multi-language routing
- Content drift & truncation detection
Truecaller bulk reputation
Upload a number list, schedule a campaign, and we run Truecaller reputation lookups at your selected time. Each number returns its current Truecaller status, reports count, and category — exported clean.
- Scheduled bulk runs (any timezone)
- Per-number Truecaller status & report count
- CSV / API export for downstream pipes
Roughly how each area works
How teams use CallVerifier day to day
Happy path first. The grey boxes are anonymised themes from customer calls — not star ratings, not stock-photo quotes.
We intentionally avoid fake “5-star reviews” here. Misleading testimonials are a common reason sites get manual actions or trust warnings — not something we want you (or Google) to worry about.
CNAM checks
CNAM verification
Typical flow
- Call our test number — we capture the inbound CNAM headers.
- We look up the same number across AT&T, T-Mobile, Verizon, Truecaller, Hiya, Robokiller.
- You get a report: displayed name + flag status + report count per carrier.
Common theme
“Why does our number show as ‘Scam Likely’ on one carrier but ‘Verified’ on another?” — paraphrased from several support teams.
Anonymised pattern; not a verbatim quote, rating, or endorsement.
Messaging lab
SMS testing
Typical flow
- Send SMS to our endpoint — pick origin country / provider / language.
- We log the exact body that landed and the time it took.
- Compare side-by-side: same message, different routes — what changed.
Common theme
“We need one place carriers can open that isn’t a forwarded thread.” — recurring in messaging ops onboarding.
Anonymised pattern; not a verbatim quote, rating, or endorsement.
Campaigns
Truecaller bulk testing
Typical flow
- Upload your number list and schedule a run window (any timezone).
- We fan out Truecaller reputation lookups across your selected window.
- Per-number status, reports count, and category — exportable as CSV.
Common theme
“After a route change we just need the bulk board to tell the truth about which numbers got flagged.” — typical fraud/QA bulk sprint.
Anonymised pattern; not a verbatim quote, rating, or endorsement.
Where things live
Real product screens, not mockups
The screenshots below are taken from the live app so your team can see exactly what to expect.
Call Setup
Select country, provider, and expected number using our intuitive step-by-step interface.
Ready to Call
Review provider details and dial the phone number before starting the verification call.
History & Evidence Log
Dive into every completed call, review attached screenshots, and share evidence with your fraud or compliance teams instantly.
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Ready to simplify verification work?
Set up your workspace and start with real calls and tests in minutes.
Why this exists
Built by people who ran telecom ops
CallVerifier was designed for teams who work under pressure: fraud desks, carrier QA, and support operations. The goal is simple - fewer manual mistakes and faster verification outcomes.
Human inbox
Talk to our team
Tell us your workflow, and we will show you how CallVerifier can fit into it without disruption.