SPF Macro Debugger
Expand SPF macros — %{i}, %{s}, %{d}, %{l}, %{o}, %{h}, %{v}, %{p} — with your own evaluation context. See exactly what each macro expands to before publishing the record, and understand the per-IP and per-sender authorisation patterns most receivers never document.
Estimated origin: Estonia
Added 13 Nov 2026
Analysed 13 Nov 2026
via Hacker News
What we found
- Analytics set tracking cookies before any opt-in, and we found no consent manager.
- Built with Astro and Vue.js, the site is served through Cloudflare.
- Only 13 other launches we've crawled run this exact stack.
- It welcomes AI crawlers and publishes an llms.txt.
Built with: 13 technologies
Embed this on your site
For light pages
<a href="https://firstsited.com/launch/65mp1g2i/spf-macro-debugger"><img src="https://firstsited.com/badge/65mp1g2i/stack.svg" alt="SPF Macro Debugger tech stack on FirstSited" height="28"></a>
For dark pages
<a href="https://firstsited.com/launch/65mp1g2i/spf-macro-debugger"><img src="https://firstsited.com/badge/65mp1g2i/stack.svg?theme=dark" alt="SPF Macro Debugger tech stack on FirstSited" height="28"></a>
| Technology | Type |
|---|---|
| Infrastructure | |
Cloudflare
|
CDN |
Cloudflare DNS
|
DNS |
| HTTP/3 | Protocol |
| HSTS | Security |
Proton Mail
(3)
|
Business email |
| Build & Framework | |
Vue.js
(2)
|
Framework |
Astro
(3)
|
Meta-framework |
| Analytics & Marketing | |
Cloudflare Web Analytics
|
Analytics |
PostHog
(4)
|
Analytics |
Google Search Console
|
SEO |
Mastodon
|
Social |
Webmention.io
|
Social |
| AI & Emerging | |
WebMCP
|
AI agent |
Each technology links to its own page: which other new sites launched with it.
Site checks
| Custom title and meta description | |
| Open Graph tags (title, image, description) | |
| Twitter card meta tags | |
| Canonical URL declared | |
| Responsive viewport meta tag | |
| Favicon present | |
| Semantic HTML (nav, main, article) | |
| Meta description is 266 characters Google only shows about 155–160 characters of the description in desktop search results (less on mobile); anything past that won't appear. |
| Referrer-Policy | |
| X-Frame-Options | |
| Permissions-Policy experimental | |
| X-Content-Type-Options | |
| Content-Security-Policy | |
| Strict-Transport-Security | |
| X-XSS-Protection deprecated, not counted |
| Privacy policy /privacy/ | |
| Terms of service /terms/ | |
| Consent manager not detected; analytics set tracking cookies on our visit with no opt-in step |
Mentions: GDPR, Cookies, Data Controller, Do Not Sell, Updated: October 28, 2026
| robots.txt | |
| sitemap.xml 1 URLs | |
| security.txt | |
| llms.txt | |
| ads.txt only for ad-funded sites | |
| humans.txt optional |
| llms.txt published | |
| No AI bots blocked in robots.txt | |
| Content-Signal ai-train = yes | |
| Content-Signal search = yes | |
| Content-Signal ai-input = yes | |
| Link headers sitemap, service-desc, api-catalog |
| State | Record | Status |
|---|---|---|
| SPF ~all | Soft-fail (~all), common and accepted | |
| DMARC p=reject | Reject (strict) | |
| DKIM | Found | |
| MTA-STS mode=testing | Testing mode, failures reported but plain text still allowed | |
| TLS-RPT | Configured |
Hosting and network
| Network | CLOUDFLARENET - Cloudflare, Inc., US AS13335, US |
|---|---|
| DNS | Cloudflare DNS authoritative nameservers |
| DNSSEC | Enabled DNS answers are signed |
| Certificate | Google Trust Services valid 12 Oct 2026 to 10 Jan 2027, as captured |
| Green hosting | Yes per The Green Web Foundation |
| Page build | 7 JS files, 0 CSS files 6 third-party domains, code splitting |
| App manifest | DMARCguard display standalone; 4 icons |
| Brand colours |
Storage: 7 items
| Name | Lifetime | Set by |
|---|---|---|
| dg_attr | 2mo | - |
| ph_phc_p6GXjCygDdhjNw7mBSqvkWUDQBppJiCwS82qqFhicNQB_posthog | 12mo | - |
| Key | Size | Set by |
|---|---|---|
| ph_phc_p6GXjCygDdhjNw7mBSqvkWUDQBppJiCwS82qqFhicNQB_posthog | 1.5 KB | PostHog |
| Key | Size | Set by |
|---|---|---|
| ph_phc_p6GXjCygDdhjNw7mBSqvkWUDQBppJiCwS82qqFhicNQB_posthog | 90 B | PostHog |
| ph_phc_p6GXjCygDdhjNw7mBSqvkWUDQBppJiCwS82qqFhicNQB_primary_window_exists | 4 B | PostHog |
| ph_phc_p6GXjCygDdhjNw7mBSqvkWUDQBppJiCwS82qqFhicNQB_session_registered_properties | 74 B | PostHog |
| ph_phc_p6GXjCygDdhjNw7mBSqvkWUDQBppJiCwS82qqFhicNQB_window_id | 38 B | PostHog |
Performance
| Measure | This site | Reading |
|---|---|---|
| Server response | 174 ms | good, faster than 67% of sites |
| Largest contentful paint | 416 ms | good |
| Layout shift | 0.00 | good |
| Page weight | 476 KB | light |
| Images | 1 | 1 without width and height, 1 without alt text |
| Third-party domains | 6 | |
| Console errors | 0 | none |
| Failed requests | 0 | none |
From a single automated render of the home page. A quick guide, not a substitute for Lighthouse or field data. How we measure
Notes
-
Looks AI-built: few AI signals.
How much the site looks AI-generated. It is a pattern match shown for interest, not a verdict.
Which signals fired
Signal Points AI CSS signals +10 AI copy signals +5 AI writing signals +5 - Analytics set tracking cookies on our visit and no consent manager was detected. UK and EU GDPR require opt-in before tracking runs, and more than 20 US states require honouring opt-out requests.
- Performance comes from one render on 13 November 2026 and will vary between visits.
How we know
FirstSited records what new websites are built with, usually within a day of going live. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We checked this one in full: its tech stack, DNS, security headers and page basics. This page is what we saw on 13 November 2026; the live site may have changed since.
Every technology below links to its own page: which other new sites launched with it. Watch any of them and get every new site that uses it as it goes live, from £15 a month.