37signals.com
37signals
37signals.com is registered with Cloudflare, Inc. since June 13, 1999 (27.4 years). The registration expires on June 13, 2027. The site runs on Cloudflare. Its email security grade is C. Its SSL certificate is issued by Google Trust Services and is valid for 36 more days.
- Domain age
- 27.4 yrs
- Technologies
- 1
- Email security
- C
- SSL days left
- 36
Registration
| Registrar | Cloudflare, Inc. |
|---|---|
| IANA ID | 1910 |
| Registered | June 13, 1999 |
| Expires | June 13, 2027 |
| Updated | February 22, 2024 |
| Status | client delete prohibited, client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited |
| Name servers | merlin.ns.cloudflare.com, serena.ns.cloudflare.com |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 104.18.0.135 | 300 |
| A | 104.18.1.135 | 300 |
| MX | work-mx.app.hey.com 10 | 300 |
| NS | merlin.ns.cloudflare.com | 86400 |
| NS | serena.ns.cloudflare.com | 86400 |
| CAA | iodef 0 mailto:[email protected] | 60 |
| CAA | issue 0 amazon.com | 60 |
| CAA | issue 0 comodoca.com | 60 |
| CAA | issue 0 digicert.com; cansignhttpexchanges=yes | 60 |
| CAA | issue 0 globalsign.com | 60 |
| CAA | issue 0 letsencrypt.org | 60 |
| CAA | issue 0 pki.goog; cansignhttpexchanges=yes | 60 |
| CAA | issue 0 ssl.com | 60 |
| CAA | issuewild 0 comodoca.com | 60 |
| CAA | issuewild 0 digicert.com; cansignhttpexchanges=yes | 60 |
| CAA | issuewild 0 letsencrypt.org | 60 |
| CAA | issuewild 0 pki.goog; cansignhttpexchanges=yes | 60 |
| TXT | 8x2rys9qrtmrt08s01k2dhf220y0bc3h | 300 |
| TXT | ZOOM_verify_3PsRA01tPEqbRQuZq0ovDX | 300 |
| TXT | anthropic-domain-verification-2ned89=7e1u02UWpXxRVFbqXvTepQODa | 300 |
| TXT | apple-domain-verification=fZq9u43pq901FVrX | 300 |
| TXT | atlassian-domain-verification=jDcnbDUp4Eqr8vcG6rwzJC/AiL4ryyQCoTDiAKjKnP7rzlvnA4akV4QxvGnUaMS8 | 300 |
| TXT | google-site-verification=75SnvFixCmuTIw1yttct06G6Mk7vGOqJDKqVd4sD66g | 300 |
| TXT | google-site-verification=vPyWJnzga2ciedbmL9z3PaMMS7gMZba_d4KE-GXzcUI | 300 |
| TXT | hey-verification:wvrWxEPH2vgJ5hJp8cjdWfZx | 300 |
| TXT | openai-domain-verification=dv-brKIWqu5JEkAoXYjfCz66ucV | 300 |
| TXT | stripe-verification=F970494BA4495175BB0BBBBBB611C2410B599753DB459B0B27676C72D5A688A6 | 300 |
| TXT | v=spf1 include:_spf.basecamp.com include:servers.mcsv.net -all | 300 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, WE1, Google Trust Services |
| Expires | December 16, 2026 |
| Days remaining | 36 |
| Protocol | TLSv1.3 |
| Names | 37signals.com, *.37signals.com |
Email security
- warnDMARC has no rua= address, so you receive no reports about mail sent as your domain.
- warnSubdomains use a weaker policy (sp=none) than the main domain (p=quarantine).
- warnDKIM key found (selector: k1) 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 rejected (hard fail).
- goodDMARC policy is quarantine: failing mail goes to spam. Move to p=reject for full protection.
- good1 MX record(s) found.
Homepage metadata
| Title | 37signals |
|---|---|
| Description | A catalog of ideas — signals — that drive us. |
| Language | en |
| Canonical | https://37signals.com/ |
| Structured data | Organization, WebSite, Article |
| Indexable | Yes |
| Word count | 189 |
About 37signals.com
Who is the registrar of 37signals.com?
37signals.com is registered with Cloudflare, Inc. (IANA ID 1910).
When does 37signals.com expire?
The current registration of 37signals.com expires on June 13, 2027. It was first registered on June 13, 1999.
What technology does 37signals.com use?
We detected 1 technologies on 37signals.com, including Cloudflare.
Does 37signals.com protect its email with SPF and DMARC?
37signals.com scores 66/100 (grade C) for email security. DMARC has no rua= address, so you receive no reports about mail sent as your domain. Subdomains use a weaker policy (sp=none) than the main domain (p=quarantine).
What are the name servers of 37signals.com?
37signals.com uses merlin.ns.cloudflare.com, serena.ns.cloudflare.com.