nmap.org
Nmap: the Network Mapper - Free Security Scanner
nmap.org is registered with Dynadot Inc since January 18, 1999 (27.8 years). The registration expires on January 18, 2032. The site runs on Universal Analytics, HSTS, Apache HTTP Server and 1 other technologies. Its email security grade is F. Its SSL certificate is issued by Let's Encrypt and is valid for 37 more days.
- Domain age
- 27.8 yrs
- Technologies
- 4
- Email security
- F
- SSL days left
- 37
Registration
| Registrar | Dynadot Inc |
|---|---|
| IANA ID | 472 |
| Registered | January 18, 1999 |
| Expires | January 18, 2032 |
| Updated | October 16, 2026 |
| Status | client transfer prohibited |
| Name servers | ns1.linode.com, ns2.linode.com, ns3.linode.com, ns4.linode.com, ns5.linode.com |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 50.116.1.184 | 2972 |
| MX | alt2.aspmx.l.google.com 5 | 3600 |
| MX | alt1.aspmx.l.google.com 5 | 3600 |
| MX | aspmx3.googlemail.com 10 | 3600 |
| MX | aspmx2.googlemail.com 10 | 3600 |
| MX | aspmx.l.google.com 1 | 3600 |
| NS | ns1.linode.com | 3600 |
| NS | ns5.linode.com | 3600 |
| NS | ns4.linode.com | 3600 |
| NS | ns2.linode.com | 3600 |
| NS | ns3.linode.com | 3600 |
| CAA | issue 0 letsencrypt.org | 3600 |
| TXT | v=spf1 a mx ptr ip4:50.116.1.184 ip6:2600:3c01::f03c:91ff:fe98:ff4e ip6:2600:3c01:e000:3e6::6d4e:7061 include:_spf.google.com ~all | 3600 |
| TXT | google-site-verification=SrtYpJGxZzMTcczZG44XtLVK-sEPit9bputDjWc0lF4 | 3600 |
| AAAA | 2600:3c01:e000:3e6::6d4e:7061 | 3435 |
Technology stack
Analytics and advertising IDs
google_analytics:UA-11009417-1Other sites using the same IDs: seclists.org
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, YR2, Let's Encrypt |
| Expires | December 17, 2026 |
| Days remaining | 37 |
| Protocol | TLSv1.3 |
| Names | insecure.com, insecure.org, issues.nmap.com, issues.nmap.org, issues.npcap.com, issues.npcap.org, nmap.com, nmap.net, nmap.org, npcap.com, npcap.org, seclists.com |
Email security
- 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.
- warnSPF uses the deprecated 'ptr' mechanism, which is slow and ignored by some receivers.
- 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).
- goodDKIM keys found (selector: google).
- good5 MX record(s) found. Mail is handled by Google Workspace.
Homepage metadata
| Title | Nmap: the Network Mapper - Free Security Scanner |
|---|---|
| Description | Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc. |
| Language | en |
| Canonical | https://nmap.org/ |
| Structured data | WebSite |
| Indexable | Yes |
| Word count | 1349 |
About nmap.org
Who is the registrar of nmap.org?
nmap.org is registered with Dynadot Inc (IANA ID 472).
When does nmap.org expire?
The current registration of nmap.org expires on January 18, 2032. It was first registered on January 18, 1999.
What technology does nmap.org use?
We detected 4 technologies on nmap.org, including Universal Analytics, HSTS, Apache HTTP Server, X (Twitter) Widgets.
Does nmap.org protect its email with SPF and DMARC?
nmap.org scores 41/100 (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. SPF uses the deprecated 'ptr' mechanism, which is slow and ignored by some receivers.
What are the name servers of nmap.org?
nmap.org uses ns1.linode.com, ns5.linode.com, ns4.linode.com, ns2.linode.com, ns3.linode.com.