Rank #9,248Updated November 10, 2026
nrao.edu
National Radio Astronomy Observatory – Revealing the Hidden Universe
The site runs on WordPress, Google Hosted Libraries, Google Fonts and 13 other technologies. Its email security grade is F. Its SSL certificate is issued by Sectigo Limited and is valid for 179 more days.
- Domain age
- —
- Technologies
- 16
- Email security
- F
- SSL days left
- 179
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 192.33.115.129 | 3600 |
| MX | revere-vml.aoc.nrao.edu 10 | 300 |
| MX | cv3.cv.nrao.edu 10 | 300 |
| MX | io.gb.nrao.edu 10 | 300 |
| NS | zia.aoc.nrao.edu | 3600 |
| NS | sadira.gb.nrao.edu | 3600 |
| NS | cv3.cv.nrao.edu | 3600 |
| TXT | atlassian-domain-verification=mjTlwjAqiE046j3AiCsCB9wU9q6fKyZ2VXmBvehlkWDjlPCdHtlqffkV/AGp3sam | 3600 |
| TXT | MS=ms86952905 | 3600 |
| TXT | apple-domain-verification=IoBzh5sfRMYauHv3 | 3600 |
| TXT | MS=B1EC8FECD69CCA0B9D746BC8F02A33E353312AD4 | 3600 |
| TXT | mandrill_verify.YOUsnxKgVCS7JcUz8rfDhQ | 3600 |
| TXT | ugIPtt8T4Uy8aftOSmTufO3LJGLJci5M8dHoq6XgewpbFttQLlDOMzlFZXLLeO0RGjXuUGWh8Arwg8RhOurJVw== | 3600 |
| TXT | docusign=7222632d-c362-4a84-9768-8e498759d6f5 | 3600 |
| TXT | v=spf1 mx include:hgncloud.com include:spf.mandrillapp.com include:spf.protection.outlook.com ip4:192.33.115.70 ip4:146.88.9.34 ~all | 3600 |
Technology stack
CMS
Fonts
JavaScript library
Programming language
Security
SEO
Tag manager
Web server
Widgets
WordPress plugin
Analytics and advertising IDs
google_tag_manager:GTM-K7BWG7HSSL certificate
| Valid | Valid |
|---|---|
| Issuer | GB, Sectigo Public Server Authentication CA DV R36, Sectigo Limited |
| Expires | May 9, 2027 |
| Days remaining | 179 |
| Protocol | TLSv1.2 |
| Names | *.nrao.edu, nrao.edu |
Email security
FScore 40/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- badNo DMARC record. Receivers have no instructions for mail that fails SPF and DKIM, and you get no reports about who sends as your domain.
- warnDKIM key found (selector: mandrill) but it is only 1024 bits; 2048 is recommended.
- warnNo MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
- warnNo TLS-RPT record, so you won't hear about failed encrypted deliveries.
- warnNo BIMI record (optional: shows your logo next to your emails in supporting inboxes).
- goodSPF record found.
- goodSPF ends with ~all: servers you have not listed are marked as suspicious (soft fail).
- good3 MX record(s) found.
Homepage metadata
| Title | National Radio Astronomy Observatory – Revealing the Hidden Universe |
|---|---|
| Description | The public page for the National Radio Astronomy Observatory (NRAO). Find info related to radio astronomy and the efforts of the observatory. |
| Language | en-US |
| Canonical | https://public.nrao.edu/ |
| Structured data | WebPage, BreadcrumbList, WebSite, Organization |
| Indexable | Yes |
| Word count | 1213 |
About nrao.edu
What technology does nrao.edu use?
We detected 16 technologies on nrao.edu, including Google Hosted Libraries, WordPress, Google Fonts, jQuery, jQuery Migrate, jQuery UI.
Does nrao.edu protect its email with SPF and DMARC?
nrao.edu scores 40/100 (grade F) for email security. No DMARC record. Receivers have no instructions for mail that fails SPF and DKIM, and you get no reports about who sends as your domain. DKIM key found (selector: mandrill) but it is only 1024 bits; 2048 is recommended.
What are the name servers of nrao.edu?
nrao.edu uses zia.aoc.nrao.edu, sadira.gb.nrao.edu, cv3.cv.nrao.edu.