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M
148
Moderate
MongoDB · Database Server & Atlas
MongoDB server reported: DNS Host Not Found.
Quick Answer
Error code 148 on your MongoDB Database Server & Atlas means: MongoDB server reported: DNS Host Not Found.. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
MONGO-ATLAS-DEDICATEDMONGO-ATLAS-SERVERLESSMONGO-COMM-6.0MONGO-COMM-7.0MONGO-COMM-8.0MONGO-ENT-6.0MONGO-ENT-7.0MONGO-ENT-8.0
Likely Causes
  1. MongoDB returned code 148 (DNSHostNotFound) while processing this request path.
  2. Network path instability interrupted request/response exchange with the service endpoint.
  3. TLS, DNS, or socket negotiation failed before the operation could complete.
How to Fix It
1
Review logs/telemetry for code 148 (DNSHostNotFound) and capture the exact command and parameters that triggered it.
2
Verify firewall/proxy/network rules and regional endpoint targeting for the workload.
3
Capture endpoint, DNS resolution, TLS handshake, and socket metrics at failure time.
4
Retry with bounded exponential backoff and idempotency protection where possible.
5
Add monitoring for recurring DNSHostNotFound events so future incidents are detected and triaged faster.
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Related Error Codes
12456
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