grtcalculator.com
Domain report: WHOIS, DNS, hosting, SSL and safety. Checked .
Online · 200SafeSSL: 46 days left8 years old
80
grtcalculator.com was registered on 10 Jul 2018 via GoDaddy.com, LLC and the registry expiry is 10 Jul 2027. WHOIS data came from RDAP at https://rdap.verisign.com/com/v1/domain/grtcalculator.com.
grtcalculator.com publishes 2 nameservers. DNSSEC is not signed.
grtcalculator.com has 1 IPv4 address (51.161.45.155). The geolocation database places 51.161.45.155 in Montreal (Ville-Marie), Canada.
The TLS certificate from YR1 is valid and has 46 days left (TLS 1.3). The homepage answered HTTP 200.
Tech detection named Apache HTTP Server, Google Analytics, Google Font API, Google Hosted Libraries, HSTS, MySQL, PHP, Ubuntu, WordPress and jQuery. The fingerprints ran on the homepage that was already downloaded.
No safety warning was recorded for grtcalculator.com in the checks that ran.
Domain · RDAP/WHOIS
grtcalculator.com was registered on 10 Jul 2018 via GoDaddy.com, LLC. The registry returned 4 status values and 2 nameservers from https://rdap.verisign.com/com/v1/domain/grtcalculator.com.
| Registered | since 10 Jul 2018 |
|---|---|
| Created | 10 July 2018 |
| Updated | 26 October 2026 |
| Expires | 10 July 2027 |
| Registrar | GoDaddy.com, LLC |
| Status | client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited |
| Nameservers | dawn.ns.cloudflare.com, fred.ns.cloudflare.com |
| DNSSEC | no |
| Source | https://rdap.verisign.com/com/v1/domain/grtcalculator.com |
grtcalculator.com carries the status "client delete prohibited". The registrar has asked the registry to refuse a delete. This is an EPP status on the domain object. It does not say the website is safe, and it does not name the person who registered it.
grtcalculator.com carries the status "client renew prohibited". The registrar has asked the registry to refuse a renewal. The expiry date still stands until a different status is set.
grtcalculator.com carries the status "client transfer prohibited". The registrar has asked the registry to refuse a transfer to another registrar. The status is a lock on the domain object. It is not evidence about the content of the site.
grtcalculator.com carries the status "client update prohibited". The registrar has asked the registry to refuse updates to the domain object. Contact and nameserver changes wait until the lock is lifted by the registrar of record.
Nameserver dawn.ns.cloudflare.com is published for grtcalculator.com in the registration record from https://rdap.verisign.com/com/v1/domain/grtcalculator.com.
Nameserver fred.ns.cloudflare.com is published for grtcalculator.com in the registration record from https://rdap.verisign.com/com/v1/domain/grtcalculator.com.
DNS
grtcalculator.com has 1 address record, 2 mail exchangers and 2 nameservers, measured at 1.1.1.1:53.
| A | 51.161.45.155 |
|---|---|
| AAAA | — |
| NS | dawn.ns.cloudflare.com, fred.ns.cloudflare.com |
| MX | mxa.mailgun.org (10), mxb.mailgun.org (10) |
| SPF | present |
| DMARC | present |
| CAA | — |
| Wildcard | off |
| DNSSEC | not signed |
| Resolver | 1.1.1.1:53 |
The SPF text record at grtcalculator.com is "v=spf1 include:mailgun.org ~all".
The DMARC text record at _dmarc.grtcalculator.com is "v=DMARC1; p=none; pct=100; fo=1; ri=3600; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]…".
IPv4 address 51.161.45.155 answers for grtcalculator.com at resolver 1.1.1.1:53.
Mail exchanger mxa.mailgun.org has preference 10.
Mail exchanger mxb.mailgun.org has preference 10.
Hosting and geo
grtcalculator.com is placed in Montreal (Ville-Marie), Canada by the local geolocation database (db-ip).
| Address | 51.161.45.155 |
|---|---|
| Country | Canada |
| City | Montreal (Ville-Marie) |
| Source | db-ip |
SSL/TLS
The certificate for grtcalculator.com is valid, with 46 days left and 2 subject alternative names. Source: tls:443.
| Issuer | YR1 |
|---|---|
| Subject | grtcalculator.com |
| Valid from | 18 September 2026 |
| Valid until | 17 December 2026 |
| Days left | 46 |
| SAN count | 2 |
| Protocol | TLS 1.3 |
| Source | tls:443 |
Subject alternative names: grtcalculator.com, www.grtcalculator.com.
Tech stack
Tech detection checked the fetched homepage and named 10 products. Source: wappalyzergo.
- Apache HTTP Server · Web servers
- Google Analytics · Analytics
- Google Font API · Font scripts
- Google Hosted Libraries · CDN
- HSTS · Security
- MySQL · Databases
- PHP · Programming languages
- Ubuntu · Operating systems
- WordPress · CMS, Blogs
- jQuery · JavaScript libraries
Apache HTTP Server is filed under Web servers.
Google Analytics is filed under Analytics.
Google Font API is filed under Font scripts.
Google Hosted Libraries is filed under CDN.
HSTS is filed under Security.
MySQL is filed under Databases.
PHP is filed under Programming languages.
Ubuntu is filed under Operating systems.
WordPress is filed under CMS, Blogs.
jQuery is filed under JavaScript libraries.
On-page checks
The homepage returned HTTP 200 in 433 ms. The target title is 40 characters and the page has 1 H1 heading.
| Status | 200 |
|---|---|
| TTFB | 433 ms |
| Title length | 40 yes |
| Quoted title | "Golden Ratio Typography (GRT) Calculator" |
| Meta description | "Cool things you can do with the GRT Pro Calculator Here’s why it’s essential to add Golden Ratio Typography everywhere you compose text online: GRT-enhanced text looks inviting and is easy to read Visitors will pay attention longer, consume more content, connect with your messages better, and buy more of whatever you’r" yes |
| H1 count | 1 |
| HSTS | yes yes |
| CSP | no |
| X-Frame-Options | — |
| Robots meta | noodp, noydir |
| Canonical | https://grtcalculator.com/ |
| Language | en-US |
| Links | 21 |
| Images | 3 |
| Favicon | yes |
The quoted title and meta description are measurements of the other site. They are not this page's title or description.
Security
Family DNS for grtcalculator.com is clear, and URLhaus is clear. Source: family DNS and local lists.
| Family DNS | clear |
|---|---|
| URLhaus | clear |
| UT1 | — |
| Web Risk | not run |
| Source | family DNS and local lists |
| HSTS | yes |
| CSP | no |
Google Web Risk did not run. No API key is configured, and this report does not invent a clean result from that service.
Score breakdown
Availability 25 of 25. DNS answer plus a homepage status in the 2xx or 3xx range.
TLS 20 of 20. A valid certificate, with extra points when it has at least 14 days left.
DNS hygiene 10 of 20. SPF, DMARC, CAA, and DNSSEC are five points each.
Security headers 5 of 15. HSTS, CSP, and X-Frame-Options or CSP frame-ancestors.
Safety lists 15 of 15. Points only when the checks ran and came back clean. Unknown is not clean.
Domain age 5 of 5. Five points at one year, two points at 30 days.
Change history
- October 2026: geo city changed from empty to Montreal (Ville-Marie).
- October 2026: geo country changed from empty to Canada.
Questions
Is grtcalculator.com safe?
The checks that ran did not produce a safety warning, and a score is not a promise that the site is safe.
Who hosts grtcalculator.com?
grtcalculator.com is placed in Montreal (Ville-Marie), Canada.
When does grtcalculator.com expire?
grtcalculator.com expires on 10 July 2027 according to https://rdap.verisign.com/com/v1/domain/grtcalculator.com.
Who owns grtcalculator.com?
The registry did not return a person or a company for grtcalculator.com. RDAP often redacts the registrant. The registrar on file is GoDaddy.com, LLC.
Sources
- RDAP source https://rdap.verisign.com/com/v1/domain/grtcalculator.com at 2026-10-30T13:56:42Z
- DNS source 1.1.1.1:53 at 2026-10-30T13:56:42Z
- TLS source tls:443 at 2026-10-30T13:56:42Z
- HTTP source https://grtcalculator.com/ at 2026-10-30T13:56:42Z
- Tech source wappalyzergo at 2026-10-30T13:56:42Z
- Geo source db-ip at 2026-10-30T13:56:42Z
- Safety source family DNS and local lists at 2026-10-30T13:56:42Z
Related reports
No other indexable reports share this TLD, host, or registrar yet.
Owner of this site?
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How to read this report
The sentences under each heading are filled from the latest snapshot. If a collector had nothing to say, that sentence is left out. The target site's own title and meta description, when shown, are quoted as measurements. They are not this page's title. Change history only lists a difference between two snapshots, so the first check starts the clock and later edits are the history. A malware blocklist is the only reason the homepage body is skipped. That fact stays on the report. It does not by itself drop the page from the sitemap or from related-report links.