Domain diagnostics m.northridgetennisacademy.org

Diagnose potential issues with a given domain.

You can bookmark this tool as diag.domains .

Global name servers

Google Public DNS

Non-authoritative domain

Cloudflare DNS

Non-authoritative domain

Quad9

Non-authoritative domain

ns1.simply.com

DNS request failed: The name server refuses to perform the specified operation for policy reasons.

ns2.simply.com

DNS request failed: The name server refuses to perform the specified operation for policy reasons.

ns3.simply.com

DNS request failed: The name server refuses to perform the specified operation for policy reasons.

External tests

DNS zone As seen by Google Public DNS

Web servers

m.northridgetennisacademy.org
Host Goal Reverse
m.northridgetennisacademy.org 172.67.196.232 -
m.northridgetennisacademy.org 104.21.52.77 -
m.northridgetennisacademy.org AAAA IPv6 2606:4700:3036:0:0:0:ac43:c4e8 -
m.northridgetennisacademy.org AAAA IPv6 2606:4700:3034:0:0:0:6815:344d -
www.m.northridgetennisacademy.org
Host Goal Reverse
www.m.northridgetennisacademy.org 104.21.52.77 -
www.m.northridgetennisacademy.org 172.67.196.232 -
www.m.northridgetennisacademy.org AAAA IPv6 2606:4700:3036:0:0:0:ac43:c4e8 -
www.m.northridgetennisacademy.org AAAA IPv6 2606:4700:3034:0:0:0:6815:344d -

Incoming mail

No MX records found

Outgoing mail

SPF record

SPF issue: No SPF record found

DKIM records

Simply.com DKIM records not found

DMARC record

No DMARC record found

TXT records

Nameservers

WHOIS

Malformed request.
>>> Last update of WHOIS database: 2026-03-31T18:08:45Z <<<

Terms of Use: Access to Public Interest Registry WHOIS information is provided to assist persons in determining the contents of a domain name registration record in the Public Interest Registry registry database. The data in this record is provided by Public Interest Registry for informational purposes only, and Public Interest Registry does not guarantee its accuracy. This service is intended only for query-based access. You agree that you will use this data only for lawful purposes and that, under no circumstances will you use this data to (a) allow, enable, or otherwise support the transmission by e-mail, telephone, or facsimile of mass unsolicited, commercial advertising or solicitations to entities other than the data recipient's own existing customers; or (b) enable high volume, automated, electronic processes that send queries or data to the systems of Registry Operator, a Registrar, or Identity Digital except as reasonably necessary to register domain names or modify existing registrations. All rights reserved. Public Interest Registry reserves the right to modify these terms at any time. By submitting this query, you agree to abide by this policy.  The Registrar of Record identified in this output may have an RDDS service that can be queried for additional information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.

WHOIS result is cached for 15 minutes

RDAP

Could not retrieve RDAP data.

RDAP result is cached for 15 minutes

HTTP trace

1
http://m.northridgetennisacademy.org
HTTP 301
172.67.196.232
Namelookup
23 ms
Connect
28 ms
Pre-transfer
28 ms
Start-transfer (TTFB)
44 ms
HTTP/2 301 Moved Permanently
date: Tue, 31 Mar 2026 18:08:46 GMT
content-length: 0
connection: keep-alive
location: https://m.northridgetennisacademy.org/
report-to: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=1x65tYKO3LURSm3Mu4rcW%2B8YGFP76Jb8FLdXlFiWHQ3Zglgx4ixNe%2BDfoUgi76AIUde0CO8wVk%2FaUaqFthEsDrc8%2F1P4%2FZf4f8uaYxfaR2DVl5x3uXHFIxdt%2BBMNcO3v2BLEOBoBgMLaRh0xtsHgYQ%3D%3D"}]}
nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
server: cloudflare
cf-ray: 9e514d22abac299e-CPH
alt-svc: h3=":443"; ma=86400
2
https://m.northridgetennisacademy.org/
HTTP 403
104.21.52.77
Namelookup
22 ms
Connect
27 ms
Pre-transfer
39 ms
Start-transfer (TTFB)
244 ms
HTTP/3 403 Forbidden
date: Tue, 31 Mar 2026 18:08:46 GMT
content-type: text/html
server: cloudflare
last-modified: Fri, 25 Jul 2025 08:25:17 GMT
report-to: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=YHgpT6AK%2FVWLn%2BvnXmMs%2BMGgRgO4kGWknN3M4nMXPvnqMsbRQ7EvENNxCoVPVsRkUdwDMrklClVx0LnHzZr1bsdUwTzIho447vuTCffCVUtrIvrlroOvfptTYAzUpmJfzZHVFYeo4qRTWdkwzFnVPQ%3D%3D"}]}
nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
cf-cache-status: DYNAMIC
content-encoding: gzip
cf-ray: 9e514d2309d331a2-CPH
alt-svc: h3=":443"; ma=86400
2
Requests
1
Redirects
289 ms
Total time
403
Final status