Custom Domains & DNS

Connect your personal .com, .dev, or custom domain in minutes with automated DNS verification, free SSL, and global edge routing.

Live Domain Verification & Authorization Engine

Real-time edge handshake simulator for: alexrivera.dev

Exact Records to Add at Your Registrar for alexrivera.devDNS Resolution: Active

A RecordHost: @Target IP: 76.76.21.21TTL: 3600

CNAMEHost: wwwTarget: cname.portflu.comTTL: 3600

TXT AuthHost: _portflu-challengeValue: portflu-verification-7e9b81f3

Ownership Auth:

ACME Verified ✓

SSL Certificate:

Let's Encrypt TLS 1.3 ✓

301 Redirect:

www → Apex (Active)

Edge Anycast:

312 Locations Synced ✓

How custom domain routing works under the hood

Engineered with multi-tenant Anycast architecture for fast, zero-downtime routing.

01Automated Pipeline

Domain Authorization & Ownership Challenge

Vercel & Netlify grade cryptographic verification

When you attach a custom domain in Portflu, our edge control plane generates a cryptographic verification challenge. This prevents domain hijacking and validates that you have authoritative administrative control before any traffic routing begins.

02Automated Pipeline

DNS Anycast Routing Configuration

Point standard A and CNAME records at your registrar

Add our Anycast edge A record (76.76.21.21) for your apex domain and CNAME (cname.portflu.com) for www. Our edge network automatically maps both routes and provides seamless 301 redirection so visitors always land on your preferred canonical URL.

03Automated Pipeline

Automated Let's Encrypt TLS Provisioning

Zero-configuration HTTPS with 90-day auto-renewal

The instant DNS propagation is detected by our global resolvers, an automated ACME HTTP-01 challenge is completed. An industry-standard TLS 1.3 certificate is generated and bound to your custom domain within 60 seconds with zero manual CSR creation.

04Automated Pipeline

Sub-50ms Global Edge Acceleration

Traffic distributed across 300+ CDN edge nodes

Your domain is propagated to edge nodes across North America, Europe, Asia-Pacific, and South America. Recruiters and clients load your portfolio from the physical edge server closest to them, guaranteeing sub-second load times worldwide.

Setup instructions for your domain registrar

Step-by-step guidance whether your domain was purchased on Cloudflare, GoDaddy, Namecheap, or Squarespace.

Configuring Cloudflare

Average propagation time: 2–10 minutes

Popular with Engineers

Go to DNS > Records in your Cloudflare dashboard for your domain.

Add an 'A Record' with Name '@' pointing to '76.76.21.21' (Set Proxy status to 'DNS only' initially).

Add a 'CNAME Record' with Name 'www' pointing to 'cname.portflu.com'.

Under SSL/TLS > Overview, ensure encryption mode is set to 'Full' or 'Full (strict)'.

DNS records active? We will verify connectivity automatically.Need registrar help? View FAQs

Troubleshooting common domain issues

Real-world fixes for SSL handshake errors, conflicting DNS records, and cache delays.

Cloudflare 525/526 SSL Handshake Errors

Root Cause: Occurs when Cloudflare proxy is active and encryption mode is set to 'Flexible' instead of 'Full (Strict)'.

Resolution: In Cloudflare dashboard, go to SSL/TLS > Overview, and switch the encryption mode to 'Full' or 'Full (Strict)'. Portflu automatically serves a valid origin certificate.

Conflicting Parking A / AAAA Records

Root Cause: Many registrars (GoDaddy, Namecheap) add default parking IPs or old IPv6 (AAAA) records that conflict with Portflu Anycast.

Resolution: Delete any default A records pointing to registrar parking pages (e.g. 34.102.x.x) and remove existing AAAA records before saving.

Local DNS Cache Propagation Delay

Root Cause: Your computer's local DNS cache might still resolve to the previous host while the rest of the world sees Portflu.

Resolution: Open terminal and run 'ipconfig /flushdns' (Windows) or 'sudo dscacheutil -flushcache' (Mac), or test using Google Public DNS (8.8.8.8).

Subdomain CNAME Flattening

Root Cause: Some older DNS providers do not allow CNAME records on root apex domains (@).

Resolution: Use an 'A Record' pointing to 76.76.21.21 for the apex domain (@), and reserve CNAME for subdomains like 'www' or 'portfolio'.

Launch your personal domain today

Connect any custom domain in minutes with free automated SSL and global Anycast edge routing.

Start now Browse Templates