When a website loads properly on one internet connection and not on another, it is a clear indication that both files and the server hosting the website are in order. More likely than not, the problem always involves a “communication gap” due to DNS cache, ISP blocking, or routing variations. It simply means that one internet connection is viewing the “correct” or “updated” version of the “address” of your website, while the other internet connection is viewing an outdated or “blocked” version. You can check for yourself to see whether it loads properly in your home internet or through mobile data. When it loads properly through mobile internet access on your mobile phone but not through your home internet, it means it is likely due to your home internet connection or ISP.
Common Culprits Behind Network Discrepancies
There are several technical considerations that might be contributing to this irregular performance:
· DNS Cache Mismatch: One ISP may have an old copy of the DNS record, while another may have the new set of DNS records already.
· ISP Filtering and Parental Controls: Certain ISPs or intranets block some free domain names by default or possess security filters that flag your site as malicious.
· VPN & Secure DNS Issues: Usage of VPN and “DNS-over-HTTPS” will result in different results compared to normal internet results as these options do not use the local “address book” run by your Internet Service Provider.
· IPv6 vs. IPv4 Issues: Occasionally, it may happen that the network attempts to connect using IPv6 and is failing because of the faulty AAAA record, and the other network may actually be working fine through the standard IPv4 route.
Effective Fixes and Workarounds
These inconsistencies can be removed by first altering the DNS of the device or router to use a trustworthy public DNS service such as Cloudflare (1.1.1.1) and Google (8.8.8.8). Once this is done, you will need to clear the DNS cache on Windows using the command ‘ipconfig /flushdns’ in Command Prompt and in Chrome using ‘chrome://net-internals/#dns’ to clear the host cache. Also, performing a ‘power cycle’ by turning off the router for 30 seconds can make the router update its routing table.
It is also worth determining if the issue is related to HTTPS, such that if the site works on the http:// version but not on the https:// version on certain networks, the issue may have to do with the interception of the SSL or the incorrect certificate, which is rejected by certain ISPs. For long-term functionality, if the free subdomain is being monitored by certain ISPs, the best remedy is to opt for a personal domain, such as .com or .net. Hosting the site on Cloudflare is also a great way to ensure accessibility across the various global networks.