deff.nelreports.net - dns.ninja
deff.nelreports.net
| CNAME | deff.nelreports.net.akamaized.net | ||||||
| CNAME | a1858.dscd.akamai.net | ||||||
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2600:1408:ec00:1406::1735:b11🇺🇸 AKAMAI-ASN12600:1408:ec00::/48 Akamai Technologies | ||||||
| PTR | g2600-1408-ec00-1406-0000-0000-1735-0b11.deploy.static.akamaitechnologies.com | ||||||
| A | 2600:1408:ec00:140c::1736:7fa6🇺🇸 AKAMAI-ASN12600:1408:ec00::/48 Akamai Technologies | ||||||
| A | 23.53.11.17🇺🇸 AKAMAI-ASN123.53.11.0/24 Akamai Technologies | ||||||
| A | 23.54.127.166🇺🇸 AKAMAI-ASN123.54.127.0/24 Akamai Technologies | ||||||
nelreports.net
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1-204.azure-dns.com ⭐ | ||||||
| NS | ns2-204.azure-dns.net | ||||||
| NS | ns3-204.azure-dns.org | ||||||
| NS | ns4-204.azure-dns.info | ||||||
| SOA | ns1-204.azure-dns.comazuredns-hostmaster@microsoft.com serial=1 | ||||||
📈 Tranco rank: #2,047
Overview
nelreports.net is a Network Error Logging (NEL) reporting endpoint operated by Microsoft. NEL is a W3C specification that enables websites to collect network error reports directly from users' browsers when connectivity issues occur—such as DNS failures, connection timeouts, or TCP resets—that cannot be detected through server-side monitoring alone.
When Microsoft services (Azure, Office 365, Bing, etc.) configure NEL policies via theNELHTTP header, browsers encountering network errors automatically send structured reports to endpoints like nelreports.net. This telemetry helps Microsoft identify and diagnose connectivity problems affecting their users across the internet.
Technical Infrastructure
- Nameservers: Azure DNS (
ns1-204.azure-dns.com,ns2-204.azure-dns.net,ns3-204.azure-dns.org,ns4-204.azure-dns.info) - DNS Provider: Microsoft Azure
- DNSSEC: Not enabled
- IPv4/IPv6: Dual-stack enabled across all nameservers
How NEL Works
- A server sends an
NELheader specifying a reporting endpoint and sampling rates - The browser caches this policy for the specified
max_age - When network errors occur, the browser generates a structured JSON report
- Reports are batched and sent to the configured endpoint (e.g., nelreports.net)
Reports include error phase (DNS/connection/application), error type, server IP, protocol, elapsed time, and HTTP status codes. This client-side telemetry provides visibility into network issues that are invisible to traditional server monitoring.
Same first word
Similar names
Previous names
Next names
DNS History
1 record (1 active, 0 former)
●CNAMEdeff.nelreports.net.akamaized.net2020-04-04 → 2026-10-12 · 2 obs
● 2026-10-12 21:45:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | l.gtld-servers.net, e.gtld-servers.net, j.gtld-servers.net, b.gtld-servers.net... | - |
| nelreports.net | ns1-204.azure-dns.com, ns2-204.azure-dns.net, ns4-204.azure-dns.info, ns3-204.azure-dns.org | 2 records |
✅ Authoritative Response
Server:204.14.183.204
NS records: ns1-204.azure-dns.com, ns2-204.azure-dns.net, ns4-204.azure-dns.info, ns3-204.azure-dns.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for nelreports.net (unsigned zone)
⏱️ Timing
Total: 455ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| CNAME | 1 | deff.nelreports.net.akamaized.net |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns2-204.azure-dns.net, ns2-204.azure-dns.net)
Analysis
IP Addresses
deff.nelreports.net has four IP addresses: 23.53.11.17, 23.54.127.166, 2600:1408:ec00:1406::1735:b11 and 2600:1408:ec00:140c::1736:7fa6.
Additional host names — a335.da2.akamai.net.0.1.cn.akamaitech.net, a747.da1.akamai.net.0.1.cn.akamaitech.net, a3802.da2.akamai.net.0.1.cn.akamaitech.net and two others — share IP numbers with deff.nelreports.net.