如何将BigRock域名的托管商从Netlify切换至Heroku？

Let’s walk through the most likely issues and fixes to get your domain pointing to your new Heroku site—this is a common roadblock, so we’ll get it sorted out!

1. First, Confirm DNS Propagation #

DNS changes don’t take effect instantly—your ISP, local device, and other DNS servers might still be caching the old Netlify records. To check:

• Run this command in your terminal to see where your domain is currently pointing:

  dig www.yourdomain.com
  # Or use nslookup if dig isn't available
  nslookup www.yourdomain.com
  

• Look for the ANSWER SECTION—it should show the Heroku target you set (usually something like your-app-name.herokudns.com). If it still shows Netlify’s IP or domain, wait a bit longer (TTL settings control this—if you set your DNS TTL to 5 minutes, it should propagate within an hour; longer TTLs can take 24-48 hours).
• Double-check your BigRock CNAME record: Make sure the www record is pointing to Heroku’s official DNS target (not .herokuapp.com—Heroku recommends using .herokudns.com to avoid SSL and stability issues).

2. Fix the Naked Domain (If You Use It) #

If visitors access yourdomain.com (without www) and it’s still pointing to Netlify, you haven’t addressed the naked domain yet:

• Heroku doesn’t support CNAME records for naked domains, so you’ll need to use an ALIAS or ANAME record in BigRock (if their DNS service supports it) pointing to your Heroku .herokudns.com target.
• If BigRock doesn’t offer ALIAS/ANAME records, set up a URL redirect in BigRock to send all naked domain traffic to www.yourdomain.com—this is the most reliable workaround for naked domains with Heroku.

3. Verify Heroku’s Domain Configuration #

Head to your Heroku app’s Settings > Domains and certificates to confirm:

• The www.yourdomain.com is listed and marked as Verified. If it’s pending verification, double-check you entered the domain correctly in Heroku, and that your DNS record matches the target Heroku provided.
• If you’re using SSL (you should be!), make sure the SSL certificate for your domain is active and issued. A missing or invalid certificate can cause browsers to fall back to cached data or show errors, making it seem like the domain isn’t pointing to Heroku.

4. Clean Up Stale DNS Records in BigRock #

Old records might be conflicting with your new CNAME:

• Log into BigRock’s domain manager and delete any old A records for www or the naked domain that pointed to Netlify’s IP.
• Ensure there’s only one CNAME record for www pointing to your Heroku target. Multiple conflicting records can cause unpredictable DNS behavior.
• Lower your DNS TTL to 300 seconds (5 minutes) to speed up future propagation if you need to make changes.

5. Flush Local and Browser Caches #

Your device or browser might be holding onto old data:

• Flush local DNS cache:
  • Windows: ipconfig /flushdns (run Command Prompt as admin)
  • Mac: sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder (run Terminal)
  • Linux: sudo systemd-resolve --flush-caches
• Clear browser cache: Use your browser’s settings to clear cached data, or test in incognito/private browsing mode (which doesn’t use cached data).

6. Remove the Domain from Netlify #

While DNS should take precedence, having the domain still linked to your Netlify site can cause confusion (and in rare cases, edge caching issues). Head to Netlify’s domain settings and remove www.yourdomain.com and the naked domain if they’re still listed there.

If you’ve tried all these steps and the domain still isn’t pointing to Heroku, reach out to Heroku support with your app name and domain, or BigRock support to confirm your DNS changes are being pushed to the global DNS network.

内容的提问来源于stack exchange，提问作者Sushmitha Katti