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penumbra.com
Services Emotional Intelligence Workshops We offer several half-day or full-day interactive programs designed to raise awareness and provide practical tools and takeaways for increasing the overall effectiveness of your employees. Learn More Leadership Coaching We work diligently with each coachee to identify unique areas of development and execute learning activities that leverage the person’s key […]
At a glance
- Category
- Education & Learning
- Language
- English
- Paid-content signal
- No paid content foundObserved
- Registered
- 1995
- Hosting
- DigitalOcean, LLCInferred
- HTTPS certificate trusted
- PassedObserved
- Last updated
Related questions
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Website Overview
Identifiable technologies and additional version or configuration signals make the service easier to fingerprint, which may help targeted scanners narrow their checks. An established domain and managed infrastructure suggest continuity of operations and may support dependable delivery, although neither guarantees service quality.
Domain and Registration
Registered in 1995, this domain has about 31 years of history. That suggests continuity, although ownership and purpose may have changed. Transfer-protection status is present, helping reduce the risk of unauthorized domain transfers. The registrar is GoDaddy.com, LLC, a widely used domain service provider. The domain uses the common .com extension, which is not an independent safety signal.
DNS and Email
Nameservers are provided by GoDaddy, indicating managed DNS hosting. MX records point to the serverdata.net email service. No CNAME was found; the observed records resolve directly to addresses. SPF and DMARC are configured. DKIM status is unknown. TXT records include verification markers for Google. Such markers may also remain after a service stops being used.
TLS and Certificates
The certificate uses an RSA 2048-bit public key, offering broad client compatibility. The server supplied a complete certificate chain. No organization name is present in the certificate; the available fields are consistent with domain validation. The certificate was issued by Let's Encrypt, commonly associated with automated certificate services. The certificate's total validity is about 89 days, consistent with a short renewal cycle.
HTTP and Browser Security
The checked browser-security headers were not detected, leaving fewer explicit browser-side safeguards. No X-Powered-By header was found, reducing one common source of backend fingerprinting information. The x-cache response header indicates a CDN or caching proxy in the delivery path. No obvious internal addresses or debug information were found in the headers. The Server header identifies nginx without an exact version.
Technology Stack Analysis
The public page identifies WordPress 6.3.8, jQuery, nginx, with exact versions exposed for 1 technologies. These details can narrow vulnerability checks, although exposure alone is not a vulnerability.
Search and Social Sharing
No homepage meta description was detected, leaving snippet selection more dependent on page text. The Generator tag identifies WordPress 6.3.8, making the publishing system easier to fingerprint. Twitter Card metadata is configured. JSON-LD includes Organization data, helping describe the organization as an entity. The title has 15 characters, within a common display range.
Hosting and Email
GoDaddy
DigitalOcean, LLC
Santa Clara, California, United States
Inferred
142.93.24.181
Registration details
| Registrar | GoDaddy.com, LLC |
|---|---|
| Registered | 1995-05-29 |
| Expires | 2027-05-28 |
| Domain status | client delete prohibited、client renew prohibited、client transfer prohibited、client update prohibited |
| Nameservers | ns23.domaincontrol.com、ns24.domaincontrol.com |
| DNSSEC | unsigned |
DNS records
| Type | Name | Value | TTL | Priority |
|---|---|---|---|---|
| A | penumbra.com | 142.93.24.181 | 600 | — |
| MX | penumbra.com | east.smtp.mx.exch090.serverdata.net | 3600 | 10 |
| MX | penumbra.com | west.smtp.mx.exch090.serverdata.net | 3600 | 20 |
| NS | penumbra.com | ns23.domaincontrol.com | 3600 | — |
| NS | penumbra.com | ns24.domaincontrol.com | 3600 | — |
| TXT | penumbra.com | google-site-verification=KLQHouslnNKOKRDIorjGk7jvqcyP--u23sAliD2faCM | 3600 | — |
| TXT | penumbra.com | v=spf1 a mx include:_spf.elasticemail.com include:emailsrvr.com include:spf.serverdata.net -all | 3600 | — |
| DMARC | _dmarc.penumbra.com | v=DMARC1;p=none;pct=100;aspf=r;adkim=r; | 3600 | — |
TLS and certificates
HTTP response headers
| Header | Value |
|---|---|
| content-type | text/html; charset=utf-8 |
| cache-control | max-age=0, s-maxage=2592000 |
| server | nginx |
Identified technologies
Pages, Search and Sharing
| Meta description | Not detected |
|---|---|
| Canonical URL | https://penumbra.com/ |
| Language | English (default) |
| Twitter Card | summary_large_image |
Social Sharing Preview
8 fields
robots.txt (opens in a new tab)
0 rulesAll bots 0 allowed · 0 disallowed
- Interval
Crawl delay 10 seconds
No matching rules.
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