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Zadarma vs DID Global compare before you decide
Shared VoIP routing leads to dropped calls, low ASR and lost leads. DID Global uses local numbers and GEO-based routing to keep call delivery stable under real traffic.
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2,085 companies using DID Global
150+ countries supported
200+ million calls processed
76 countries where clients operate
Stable routing that protects your revenue
DID Global builds VoIP routing per GEO. Calls go through consistently, without drops that cost you leads and sales.
Local numbers that convert
We use local DID numbers configured for each market. Fewer spam flags, higher answer rates, better inbound and outbound performance.
Consistent ASR
Better routing and number quality keep answer rates steady, not fluctuating day to day.
Setup in days
No weeks of integration. Typical launch – 3–5 days.
Handles real traffic volume
Works under outbound load and inbound peaks without breaking delivery.
Direct technical support
You speak directly with telecom specialists. Issues are handled as they come up, without delays or long support chains.
Your routing is already costing you leads
Review your DID numbers, SIP and routing setup and see what needs to change to stabilise call delivery.
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DID Global vs Zadarma
Routing model
Call stability
ASR
Numbers lifespan
Spam risk
Traffic handling
Daily operations
Scaling
DID GLOBAL
GEO-based routing per market
Consistent under load
60–70% typical range
Weeks to months
Lower with local routing
Handles 1k–10k+ calls/day
No constant adjustments
Add GEOs without delivery loss
ZADARMA
Shared routing across users
Unstable with traffic spikes
35–50% depending on route
Often days to 1–2 weeks
Higher due to shared traffic
Performance drops under load
Requires frequent changes
Delivery drops as volume grows
A 15–25% drop in ASR means fewer connected calls and lost leads every day.
Cases section
low ASR and unstable numbers
Germany
The team was working the German market without proper local numbers. Some calls didn’t go through, some numbers were flagged as spam within days. ASR stayed around 45–50%.
After switching to local DID numbers and rebuilding routing through SIP:
ASR increased to 62–68% within the first month
Spam flags dropped roughly 2x
Numbers stopped burning out after a few days
The team no longer had to switch channels constantly
Client quote
“We were changing numbers almost every week. After switching, the numbers hold and calls actually go through. That alone changed how the team works.”
routing failures under load
Turkey
In Turkey, the setup couldn’t handle traffic. During peak hours, part of the calls simply didn’t go through. Failures were regular.
After implementing a proper SIP setup with backup routes:
Failures dropped by about 70%
Routing holds during peak load
The team can now plan traffic instead of guessing
Client quote
“Before, we never knew if the channel would hold under load. Now we can run full volume and not worry about it breaking.”
low ASR and spam issues
Outbound
The company used low-cost routes and numbers with poor reputation. ASR stayed around 38–42%, numbers were frequently blocked.
After switching to DID Global:
ASR increased to 60%+
Blocking dropped significantly
Numbers no longer need to be replaced every week
Outbound stopped randomly dropping
Client quote
“We used to lose numbers and performance at the same time. Now outbound is stable, and we don’t have to rebuild everything every few days.”
