https://fb.me
Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.SCORE
91
GRADE
A
FIX
2
REVIEW
1
PASS
6
INFO
0
Probed from Amsterdam, Netherlands
302 Found
Checks
96 PASS 1 REVIEW 2 FIX
DTLS Certificate Expiry & RecommendationsAction8 days until leaf cert expires — 4 issues to addressFIX
TLS Certificate Expiry & Recommendations
Action8 days until leaf cert expires — 4 issues to address
Certificate validity
8
days left
0d 30d 60d 90d+
Renew urgently — under 14 days remaining
Recommended actions
- Renew certificate — 8 days remaining
- Submit your domain to hstspreload.org to be added to the Chrome preload list
- Enable DNSSEC on your domain for DNS spoofing protection
- Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
DCDN & DeliveryActionNo CDN detectedFIX
CDN & Delivery
ActionNo CDN detected
No CDN detected
Warning::
No CDN detected
A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.
No CDN detected
Consider using a CDN to improve global delivery speed and reduce origin load.
CCrawlabilityActionrobots.txt present, sitemap with 0 URLsREVIEW
Crawlability
Actionrobots.txt present, sitemap with 0 URLs
robots.txt present, sitemap with 0 URLs
Info::
robots.txt is present
Got: 10240 bytes
Info::
sitemap.xml is present
Warning::
sitemap.xml contains invalid XML
Search engines may not be able to parse the sitemap. Fix XML validation errors.
Warning::
sitemap.xml is empty — no URLs found
An empty sitemap provides no value. Add <url> entries for your pages.
Info::
robots.txt does not reference a sitemap
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.
Search engines may not be able to parse the sitemap. Fix XML validation errors.
Why this matters
An unparseable sitemap is silently ignored by Google — the URLs it advertises are never queued for crawl.
Learn more ▾ ▴
Google's sitemap parser is strict about XML validity. A single unescaped `&` or unclosed tag invalidates the whole file. Run your sitemap through a validator (Search Console's Sitemaps report flags it) and fix the offending entry. Most generators escape correctly; mistakes usually come from manually-written entries.
Source: sitemaps.org / Google Search Central
An empty sitemap provides no value. Add <url> entries for your pages.
Why this matters
An empty sitemap signals 'no content to index' to Google — actively harmful versus having no sitemap at all.
Learn more ▾ ▴
Google compares URLs in the sitemap against URLs it has crawled. An empty sitemap on a site with thousands of pages signals abandonment. Either populate it correctly (most CMSes auto-generate) or delete the file and let Google crawl normally.
Source: Google Search Central / sitemaps.org
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.
Why this matters
robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.
Source: sitemaps.org
robots.txt 200 OK
Size 10240 B Sitemaps referenced 0 User-agents Blocking No — crawling allowed
<!DOCTYPE html><html id="facebook" class="_9dls __fb-light-mode" lang="nl" dir="ltr"><head><link data-default-icon="https://static.xx.fbcdn.net/rsrc.php/y1/r/ay1hV6OlegS.ico" data-badged-icon="https://static.xx.fbcdn.net/rsrc.php/yD/r/UJj0tgk-RrT.ico" rel="shortcut icon" href="https://static.xx.fbcdn.net/rsrc.php/y1/r/ay1hV6OlegS.ico" /><meta name="bingbot" content="noarchive" /><link rel="canonical" href="https://nl-nl.facebook.com/login" /><style nonce="J5s6Y1QJ">:root, .__fb-light-mode:root, .__fb-light-mode {--fds-black:#000000;--fds-black-alpha-05:rgba(0, 0, 0, 0.05);--fds-black-alpha-10:rgba(0, 0, 0, 0.1);--fds-black-alpha-15:rgba(0, 0, 0, 0.15);--fds-black-alpha-20:rgba(0, 0, 0, 0.2);--fds-black-alpha-30:rgba(0, 0, 0, 0.3);--fds-black-alpha-40:rgba(0, 0, 0, 0.4);--fds-black-alpha-50:rgba(0, 0, 0, 0.5);--fds-black-alpha-60:rgba(0, 0, 0, 0.6);--fds-black-alpha-80:rgba(0, 0, 0, 0.8);--fds-blue-05:#ECF3FF;--fds-blue-30:#AAC9FF;--fds-blue-40:#77A7FF;--fds-blue-60:#1877F2;--fds-blue-70:#2851A3;--fds-blue-80:#1D3C78;--fds-button-text:#444950;--fds-comment-background:#F2F3F5;--fds-dark-mode-gray-35:#CCCCCC;--fds-dark-mode-gray-50:#828282;--fds-dark-mode-gray-70:#4A4A4A;--fds-dark-mode-gray-80:#373737;--fds-dark-mode-gray-90:#282828;--fds-dark-mode-gray-100:#1C1C1C;--fds-gray-00:#F5F6F7;--fds-gray-05:#F2F3F5;--fds-gray-10:#EBEDF0;--fds-gray-20:#DADDE1;--fds-gray-25:#CCD0D5;--fds-gray-30:#BEC3C9;--fds-gray-45:#8D949E;--fds-gray-70:#606770;--fds-gray-80:#444950;--fds-gray-90:#303338;--fds-gray-100:#1C1E21;--fds-green-55:#00A400;--fds-green-60:#31A73B;--fds-green-65:#51CE70;--fds-highlight:#3578E5;--fds-highlight-cell-background:#ECF3FF;--fds-primary-icon:#1C1E21;--fds-primary-text:#1C1E21;--fds-red-55:#FA383E;--fds-soft:cubic-bezier(.08,.52,.52,1);--fds-spectrum-aluminum-tint-70:#E4F0F6;--fds-spectrum-blue-gray-tint-70:#CFD1D5;--fds-spectrum-cherry:#F35369;--fds-spectrum-cherry-tint-70:#FBCCD2;--fds-spectrum-grape-tint-70:#DDD5F0;--fds-spectrum-grape-tint-90:#F4F1FA;--fds-spectrum-lemon-dark-1:#F5C33B;--fds-spectrum-lemon-tint-70:#FEF2D1;--fds-spectrum-lime:#A3CE71;--fds-spectrum-lime-tint-70:#E4F0D5;--fds-spectrum-orange-tint-70:#FCDEC5;--fds-spectrum-orange-tint-90:#FEF4EC;--fds-spectrum-seafoam-tint-70:#CAEEF9;--fds-spectrum-slate-dark-2:#89A1AC;--fds-spectrum-slate-tint-70:#EAEFF2;--fds-spectrum-teal:#6BCEBB;--fds-spectrum-teal-dark-1:#4DBBA6;--fds-spectrum-teal-dark-2:#31A38D;--fds-spectrum-teal-tint-70:#D2F0EA;--fds-spectrum-teal-tint-90:#F0FAF8;--fds-spectrum-tomato:#FB724B;--fds-spectrum-tomato-tint-30:#F38E7B;--fds-spectrum-tomato-tint-90:#FDEFED;--fds-strong:cubic-bezier(.12,.8,.32,1);--fds-unified-blue-35:#1455B0;--fds-unified-gray-20:#323436;--fds-white:#FFFFFF;--fds-white-alpha-05:rgba(255, 255, 255, 0.05);--fds-white-alpha-10:rgba(255, 255, 255, 0.1);--fds-white-alpha-20:rgba(255, 255, 255, 0.2);--fds-white-alpha-30:rgba(255, 255, 255, 0.3);--fds-white-alpha-40:rgba(255, 255, 255, 0.4);--fds-white-alpha-50:rgba(255, 255, 255, 0.5);--fds-white-alpha-60:rgba(255, 255, 255, 0.6);--fds-white-alpha-80:rgba(255, 255, 255, 0.8);--fds-yellow-20:#FFBA00;--accent:#111112;--always-white:#FFFFFF;--always-black:#000000;--always-dark-gradient:linear-gradient(rgba(0,0,0,0), rgba(0,0,0,0.6));--always-dark-overlay:rgba(0, 0, 0, 0.4);--always-light-overlay:rgba(255, 255, 255, 0.4);--always-gray-40:#65676B;--always-gray-75:#BCC0C4;--always-gray-95:#F0F2F5;--attachment-footer-background:rgba(17, 17, 18, 0.1);--background-deemphasized:#F2F4F6;--badge-background-color-blue:var(--accent);--badge-background-color-dark-gray:var(--secondary-icon);--badge-background-color-gray:var(--disabled-icon);--badge-background-color-green:var(--positive);--badge-background-color-light-blue:var(--highlight-bg);--badge-background-color-red:var(--notification-badge);--badge-background-color-yellow:var(--base-lemon);--base-blue:#1877F2;--base-cherry:#F3425F;--base-grape:#9360F7;--base-lemon:#F7B928;--base-lime:#45BD62;--base-pink:#FF66BF;--base-seafoam:#54C7EC;--base-teal:#2ABBA7;--base-tomato:#FB724B;--text-badge-info-background:#DBECFF;--text-badge-success-background:#DAF0D4;--text-badge-attention-background:#FAEBA4;--text-badge-critical-background:#FEE4E6;--blue-link:#0064E0;--border-focused:#666A72;--card-background:#FFFFFF;--card-background-flat:#FFFFFF;--comment-background:rgba(17, 17, 18, 0.1);--comment-footer-background:#F6F9FA;--dataviz-primary-1:rgb(0,174,143);--dataviz-blue-primary:#1D85FC;--dataviz-blue-secondary:#043B72;--dataviz-orange:#D06C14;--disabled-button-background:#E4E6EB;--disabled-button-text:#BCC0C4;--disabled-icon:#9FA4AB;--disabled-text:#9FA4AB;--divider:#DFE2E5;--divider-on-color:#CED0D4;--event-date:#D31130;--fb-wordmark:#1877F2;--fb-logo:#0866FF;--filter-accent:invert(39%) sepia(57%) saturate(200%) saturate(200%) saturate(200%) saturate(200%) saturate(200%) saturate(147.75%) hue-rotate(202deg) brightness(97%) contrast(96%);--filter-always-white:invert(100%);--filter-disabled-icon:invert(80%) sepia(6%) saturate(200%) saturate(120%) hue-rotate(173deg) brightness(98%) contrast(89%);--filter-placeholder-icon:invert(59%) sepia(11%) saturate(200%) saturate(135%) hue-rotate(176deg) brightness(96%) contrast(94%);--filter-primary-accent:invert(39%) sepia(57%) saturate(200%) saturate(200%) saturate(200%) saturate(200%) saturate(200%) saturate(147.75%) hue-rotate(202deg) brightness(97%) contrast(96%);--filter-primary-icon:invert(8%) sepia(10%) saturate(200%) saturate(200%) saturate(166%) hue-rotate(177deg) brightness(104%) contrast(91%);--filter-secondary-button-icon-on-media:invert(100%);--filter-secondary-icon:invert(39%) sepia(21%) saturate(200%) saturate(109.5%) hue-rotate(174deg) brightness(94%) contrast(86%);--filter-warning-icon:invert(77%) sepia(29%) saturate(200%) saturate(200%) saturate(200%) saturate(200%) saturate(200%) saturate(128%) hue-rotate(359deg) brightness(102%) contrast(107%);--filter-blue-link-icon:invert(30%) sepia(98%) saturate(200%) saturate(200%) saturate(200%) saturate(166.5%) hue-rotate(192deg) brightness(91%) contrast(101%);--filter-positive:invert(37%) sepia(61%) saturate(200%) saturate(200%) saturate(200%) saturate(200%) saturate(115%) hue-rotate(91deg) brightness(97%) contrast(105%);--filter-primary-deemphasized-button-icon:invert(28%) sepia(100%) saturate(6042%) hue-rotate(202deg) brightness(96%) contrast(101%);--filter-negative:invert(25%) sepia(33%) saturate(200%) saturate(200%) saturate(200%) saturate(200%) saturate(200%) saturate(200%) saturate(110%) hue-rotate(345deg) brightness(132%) contrast(96%);--focus-ring-blue:#1877F2;--glimmer-base-opaque:#979A9F;--glimmer-high-contrast-base-opaque:#65686C;--glimmer-opacity-high-contrast-max:1;--glimmer-opacity-high-contrast-min:0.08;--glimmer-opacity-max:1;--glimmer-opacity-min:0.25;--glimmer-spinner-icon:#65676B;--hero-banner-background:#FFFFFF;--hosted-view-selected-state:#434648;--highlight-bg:#E7F3FF;--hover-overlay:rgba(0, 0, 0, 0.05);--inverse-text:#F2F4F6;--list-cell-chevron:#666A72;--media-hover:rgba(68, 73, 80, 0.15);--media-inner-border:rgba(17, 17, 18, 0.1);--media-outer-border:#FFFFFF;--media-pressed:rgba(17, 17, 18, 0.3);--messenger-card-background:#FFFFFF;--messenger-card-box-shadow:0px 1px 2px 0px #0000001A;--mwp-header-background-color:var(--messenger-card-background);--mwp-header-button-color:var(--accent);--mwp-message-row-background:var(--messenger-card-background);--messenger-reply-background:#F0F2F5;--overlay-alpha-80:rgba(0, 0, 0, 0.6);--overlay-on-media:rgba(0, 0, 0, 0.7);--nav-bar-background:rgba(0,0,0,0.00);--popover-card-background:var(--card-background);--nav-bar-background-gradient:linear-gradient(to top, #FFFFFF, rgba(255,255,255.9), rgba(255,255,255,.7), rgba(255,255,255,.4), rgba(255,255,255,0));--nav-bar-background-gradient-wash:linear-gradient(to top, #F0F2F5, rgba(240,242,245.9), rgba(240,242,245,.7), rgba(240,242,245,.4), rgba(240,242,245,0));--negative:#D31130;--negative-background:hsl(350, 87%, 55%, 20%);--new-notification-background:rgba(17, 17, 18, 0.1);--non-media-pressed:rgba(17, 17, 18, 0.15);--non-media-pressed-on-dark:rgba(255, 255, 255, 0.3);--notification-badge:#D31130;--placeholder-icon:#666A72;--placeholder-image:#DFE2E5;--placeholder-text:#666A72;--placeholder-text-on-media:#D0D3D6;--popover-background:#FFFFFF;--positive:#147B29;--positive-background:#DEEFE1;--press-overlay:rgba(0, 0, 0, 0.10);--primary-button-background:#0064E0;--primary-button-icon:#F2F4F6;--primary-button-pressed:#77A7FF;--primary-button-text:#F2F4F6;--primary-deemphasized-button-background:rgba(0,0,0,0.00);--primary-deemphasized-button-pressed:rgb(0,0,0,.05);--primary-deemphasized-button-pressed-overlay:rgb(0,0,0,.1);--primary-deemphasized-button-text:#F2F4F6;--primary-icon:#111112;--primary-text:#111112;--primary-text-on-media:#FFFFFF;--primary-web-focus-indicator:#D24294;--progress-ring-neutral-background:rgba(0, 0, 0, 0.2);--progress-ring-neutral-foreground:#000000;--progress-ring-on-media-background:rgba(255, 255, 255, 0.2);--progress-ring-on-media-foreground:rgb(255,255,255);--progress-ring-blue-background:rgba(24, 119, 242, 0.2);--progress-ring-blue-foreground:hsl(214, 89%, 52%);--progress-ring-disabled-background:rgba(190,195,201, 0.2);--progress-ring-disabled-foreground:#BEC3C9;--rating-star-active:#EB660D;--scroll-thumb:#BCC0C4;--scroll-shadow:0 0 16px 0 rgba(52,72,84,0.05);--secondary-button-background:rgba(255, 255, 255, 0.2);--secondary-button-background-floating:#ffffff;--secondary-button-background-on-dark:rgba(0, 0, 0, 0.4);--secondary-button-pressed:rgba(0,0,0,0.00);--secondary-button-stroke:#D0D3D6;--secondary-button-text:#111112;--secondary-icon:#666A72;--secondary-text:#666A72;--secondary-text-on-media:#D0D3D6;--section-header-text:#4B4C4F;--shadow-1:rgba(0, 0, 0, 0.1);--shadow-2:rgba(0, 0, 0, 0.2);--shadow-5:rgba(0, 0, 0, 0.5);--shadow-8:rgba(0, 0, 0, 0.8);--shadow-base:0 1px 2px var(--shadow-2);--shadow-elevated:0px 4px 12px rgba(17, 17, 18, 0.12);--shadow-emphasis:0 2px 12px var(--shadow-2);--shadow-inset:rgba(255, 255, 255, 0.5);--shadow-on-media:0px 0px 1px rgba(0, 0, 0, 0.62);--shadow-persistent:0px 6px 16px rgba(17, 17, 18, 0.16);--shadow-primary:0px 0px 0px rgba(255, 255, 255, 0);--shadow-responsive:0px 8px 16px 0px rgba(0, 0, 0, 0.1
sitemap.xml 200 OK
Type URL Set URLs 0 entries Valid XML No
A+DNS Records1 A records, 8 ms lookupPASS
DNS Records
1 A records, 8 ms lookup
1 A records, 8 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 57.144.222.1
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
Has 1 IPv6 (AAAA) record(s)
Got: 2a03:2880:f36f:1:face:b00c:0:25de
Info::
4 nameserver(s) configured
Got: d.ns.facebook.com, a.ns.facebook.com, c.ns.facebook.com, b.ns.facebook.com
Info::
1 mail exchanger(s) configured
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
SPF record present in TXT
Info::
DNS resolution time: 8 ms
Got: 8 ms
| A | 57.144.222.1 |
| AAAA | 2a03:2880:f36f:1:face:b00c:0:25de |
| CNAME | — |
| NS | d.ns.facebook.com, a.ns.facebook.com, c.ns.facebook.com, b.ns.facebook.com |
| MX | 10 smtpin.vvv.facebook.com |
| TXT | SPF v=spf1 a ~all csvg5znvp2lflc1fjsr5lyt71l3532w7 |
| CAA | Lookup not available with standard resolver |
Resolved in 8 ms
Multiple A records provide failover if one server goes down.
Why this matters
Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.
Learn more ▾ ▴
Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.
Source: SRE practice / DNS architecture
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Why this matters
Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.
ARedirect Chain1 redirect(s), 118 ms totalPASS
Redirect Chain
1 redirect(s), 118 ms total
1 redirect(s), 118 ms total
Info::
Single redirect
Got: https://fb.me → https://www.facebook.com/ (302)
Info::
WWW normalization redirect
Info::
Uses 302 (temporary) redirect
If permanent, use 301 instead.
Got: https://fb.me
Info::
Cross-domain redirect detected
https://fb.me
52 ms · HTTP/1.1
302
https://www.facebook.com/
66 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://fb.me | 302 | 52 ms | HTTP/1.1 | |
| 2 | https://www.facebook.com/ | 200 | 66 ms | HTTP/1.1 |
See the visual redirect chain in the HTTP Probe tab →
If permanent, use 301 instead.
Why this matters
302 (Found) is for genuinely temporary redirects — if this redirect is permanent, switch to 301 to preserve SEO equity.
Learn more ▾ ▴
Search engines treat 302 as temporary, keeping the original URL indexed and not transferring full link equity to the destination. Use 301 (Moved Permanently) for permanent redirects (HTTP→HTTPS, www-vs-non-www, URL restructures).
Source: Google Search Central
A+IPv6 ReadinessIPv6 reachable (1 ms)PASS
IPv6 Readiness
IPv6 reachable (1 ms)
IPv6 reachable (1 ms)
Info::
IPv6 is configured and reachable at 2a03:2880:f36f:1:face:b00c:0:25de
Got: 1 ms connect
IPv6 Ready
AAAA Records 2a03:2880:f36f:1:face:b00c:0:25de Connection Reachable (1 ms)
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
www/non-www, trailing slash, HTTP→HTTPS
Info::
www/non-www redirect configured correctly (preferred: non-www)
Info::
HTTP correctly 301-redirects to HTTPS
www / non-www
302https://www.fb.me/
200https://fb.me/
Preferred variant: non-www
HTTP → HTTPS
301http://fb.me/ → https://fb.me/
Consistent
A+Domain Intelligencefb.me — via RegistrarSafe, LLC, 16 years, 11 months oldPASS
Domain Intelligence
fb.me — via RegistrarSafe, LLC, 16 years, 11 months old
fb.me — via RegistrarSafe, LLC, 16 years, 11 months old
Info::
Domain registered until Jul 24, 2034 (8 years, 4 months remaining)
Info::
Registrar: RegistrarSafe, LLC
Info::
Registrar lock is enabled
Domain cannot be transferred without explicit unlock from the registrar. This protects against unauthorized transfers.
Domain expiry
2932 days
July 24, 2034
SSL certificate
8 days
Issued by DigiCert Inc
Domain age
16 years, 11 months
Registered July 24, 2009
DNSSEC
Status unknown
Protects against DNS spoofing
Hosting
Unknown
2a03:2880:f36f:1:face:b00c:0:25de
Registrar
RegistrarSafe, LLC
Locked 4 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
- Renew the TLS certificate or verify auto-renewal is working
Registrar RegistrarSafe, LLC
Created July 24, 2009 (16 years, 11 months ago)
Expires July 24, 2034 (8 years, 4 months)
Last Updated August 4, 2025
Name Servers b.ns.facebook.com, a.ns.facebook.com, c.ns.facebook.com, d.ns.facebook.com
Registrant Meta Platforms, Inc.
Hosting
IP Address 2a03:2880:f36f:1:face:b00c:0:25de
Data source: whois (0.7s)
Domain cannot be transferred without explicit unlock from the registrar. This protects against unauthorized transfers.
Why this matters
Registrar lock (clientTransferProhibited et al.) prevents unauthorized domain transfers — strongest defense against domain hijacking.
Source: ICANN / domain-security best practice
A+HTTP Probe TimingTotal 34 ms — DNS, TCP, TLS, TTFB, content transfer breakdownPASS
HTTP Probe Timing
Total 34 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
8 msTCP Connect TCP Connect — time to establish a TCP connection to the server.
1 msTLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
5 msTime to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
34 msTotal Time Total request time from DNS lookup through full response.
34 msConnection waterfall
DNS Lookup 8 ms TCP Connect 1 ms TLS Handshake 5 ms Server Processing 20 ms Content Transfer 0 ms
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.