Total Tests
17
Passed
12
Critical Issues
4
Performance analysis data is not available for this domain. This can happen when the analysis times out or when nameservers are unreachable.
Information provided by k.gtld-servers.net
141.95.140.91141.95.140.92141.95.140.93141.95.140.94Note:
The parent server is providing glue records for these nameservers. While not required (since the nameservers are not under your domain), this helps optimize DNS resolution.
| Status | Test name | Information |
|---|---|---|
Authoritative Nameservers | These nameservers are responsible for answering queries about your domain 4 Records ns1.nstable.comns2.nstable.comns3.nstable.comns4.nstable.comSource: This information was kindly provided by k.gtld-servers.net ๐๐ผ | |
TLD Delegation Check | Good. k.gtld-servers.net has information for your TLD. This confirms your domain is properly delegated. | |
Nameservers Listed at Parent | Good. The parent server has your nameservers listed and they match the actual NS records. This ensures consistent DNS resolution. | |
Glue Records from Parent | Glue Records from Parent ServerInformation provided by k.gtld-servers.net ns1.nstable.comNameserver IPv4 Addresses: 141.95.140.91ns2.nstable.comNameserver IPv4 Addresses: 141.95.140.92ns3.nstable.comNameserver IPv4 Addresses: 141.95.140.93ns4.nstable.comNameserver IPv4 Addresses: 141.95.140.94Note: The parent server is providing glue records for these nameservers. While not required (since the nameservers are not under your domain), this helps optimize DNS resolution. |
| Status | Test name | Information |
|---|---|---|
Nameserver Checks | Error performing nameserver checks: Module timeout (time budget exceeded) |
Serial Number
2025122644
A unique version number that changes whenever the zone file is updated
How often secondary nameservers check for updates (20m - 24h)
How long to wait before retrying a failed zone transfer (2m - 2h)
How long secondary servers serve stale zone data (1w - 4w)
Default time-to-live for resource records (5m - 24h)
| Status | Test name | Information |
|---|---|---|
SOA record | Primary Nameserverns1.nstable.com Hostmaster Emaildns.nstable.com Serial Number 2025122644 Standard Format (YYYYMMDDnn) A unique version number that changes whenever the zone file is updated Time IntervalsRefresh7350 seconds (2 hours) How often secondary nameservers check for updates (20m - 24h) Retry1625 seconds (27 minutes) How long to wait before retrying a failed zone transfer (2m - 2h) Expire1210645 seconds (14 days) How long secondary servers serve stale zone data (1w - 4w) TTL365 seconds (6 minutes) Default time-to-live for resource records (5m - 24h) | |
SOA Serial Consistency | SOA Serial numbers per nameserver:
ns3.nstable.com: 2025122644
ns4.nstable.com: 2025122644
ns1.nstable.com: 2025122644
ns2.nstable.com: 2025122644
Good. All nameservers report the same SOA serial number. | |
SOA MNAME entry | OK. ns1.nstable.com is correctly listed as one of your nameservers. | |
SOA Serial | Your SOA serial number is: 2025122644. | |
SOA REFRESH | OK. Your SOA REFRESH interval is: 7350 seconds (123 minutes). This is within the recommended range of 1200-43200 seconds as per RFC1912 section 2.2. | |
SOA RETRY | OK. Your SOA RETRY value is: 1625 seconds (27 minutes). This is within the recommended range of 120-7200 seconds as per RFC1912 section 2.2. | |
SOA EXPIRE | Current expire time is 1210645 seconds (14 days). | |
SOA MINIMUM TTL | OK. Your SOA MINIMUM TTL is: 365 seconds (6 minutes). This value is used for negative caching and is within the recommended range of 180-86400 seconds as per RFC2308 section 4. |
Single IPv4 address configuration
141.95.140.95| Status | Test name | Information |
|---|---|---|
A Record Configuration | IPv4 ConfigurationSingle IPv4 address configuration IPv4 Addresses 141.95.140.95TTL: 30s Provides a good balance between propagation speed and DNS load | |
A Record TTL | Low TTL of 30 seconds provides quick propagation but may increase DNS load. |
| Status | Test name | Information |
|---|---|---|
IPv6 Support | No AAAA (IPv6) records found. While not required, IPv6 support is recommended for future-proofing your domain and improving accessibility for IPv6 users. |
| Status | Test name | Information |
|---|---|---|
MX Analysis | MX analysis was skipped due to time constraints. The analysis took longer than expected, likely due to slow or unreachable nameservers. |
| Status | Test name | Information |
|---|---|---|
WWW Analysis | Error analyzing WWW records: Module timeout (time budget exceeded) |
| Status | Test name | Information |
|---|---|---|
DNSSEC | DNSSEC validation failed. This indicates a problem with your DNSSEC configuration:
โข DNSKEY query failed with SERVFAIL
โข DS query failed with SERVFAIL
Please check your DNSSEC configuration with your DNS provider. | |
Zone Transfer | Zone transfer (AXFR) is properly restricted. Tested 4 nameservers โ all refused the transfer request.
Learn more: https://dnschkr.com/blog/dns-attacks-guide#dns-zone-transfer-attack-axfr | |
Wildcard DNS | Good. Tested notrealdnschkr.james.com - No wildcard DNS records found, ensuring random subdomains won't resolve to an IP address. | |
NXDOMAIN Response | Warning: Server does not return NXDOMAIN for non-existent domains. This could indicate misconfiguration or intentional wildcard records. | |
CAA Records | No CAA records found. While optional, CAA records help control which Certificate Authorities can issue certificates for your domain. | |
Subdomain Takeover | Checked 8 common subdomains โ none have external CNAME records. No subdomain takeover risk from dangling CNAMEs.
Learn more: https://dnschkr.com/blog/dns-attacks-guide#subdomain-takeover |
| Status | Test name | Information |
|---|---|---|
TXT Analysis | Error analyzing TXT records: Module timeout (time budget exceeded) |