Managing Many Sites? Check Multiple Domains at Once with Bulk Check

Checking the health of one domain takes under a minute — but what if you manage 20 or 50 websites? Typing in domain names one by one and noting each result page is the nightmare of every agency and freelancer. The solution is a feature called Bulk Check — inspecting many domains at once in a single run.

The problem of managing many websites

As the number of sites you manage grows, what used to be easy becomes a burden.

• SSL certificates expire at different times — every site has a different expiry date, impossible to remember
• Domains expire in different months — miss the renewal on just one and you lose a client
• Clients change DNS without telling you — then call to say "the site has a problem"
• Checking one by one eats time — 50 sites × 1 minute = nearly an hour per round

The result is that many people choose to "not check at all" until something breaks — the most expensive approach.

What is Bulk Check

Bulk Check is a feature that lets you enter a list of multiple domains at once, and the tool checks the health of every domain in a single run — instead of checking one name at a time, you paste the whole list and get the combined results back as a set.

A domain health tool like dnsxray.com offers a Bulk check option that inspects many domains together, covering DNS, mail servers, SSL and WHOIS — ideal for anyone who needs an overview of many sites at once.

Who should use Bulk Check

Group	Why they need it
Web design agencies	Manage dozens of client sites, need to know before clients call
Hosting resellers	Many customers under their plan, check SSL/domains as a batch
Freelance site maintainers	Multiple monthly retainers, need to send health reports
In-house IT teams	One company with many domains/brands/campaigns
Multi-brand business owners	Each brand has its own separate site and email

What Bulk Check inspects at once

• SSL for every site — instantly see which certificates are near expiry and prioritize
• Domain expiry dates (WHOIS) — know in advance which domains need renewing this month
• DNS / nameservers — catch which sites have had values changed without notice
• Mail servers — verify each client's email is still configured correctly

How to use Bulk Check

1. Gather your domain list — make a list of every domain you manage in one file
2. Open a tool that supports Bulk check such as dnsxray.com and select Bulk mode
3. Paste in the whole domain list and run the check
4. Review the combined results — scan for sites with SSL/domains near expiry, or bad DNS
5. Save the result as PDF to keep as a record and send to clients

Make checking a routine

Bulk Check is most valuable when done on a regular cadence, not just when something is wrong.

Cadence	What to check
Weekly	SSL on important / high-traffic sites
Monthly	Bulk check every domain you manage + send client reports
Quarterly	Review domain expiry dates 90 days ahead

What to prepare before your first Bulk Check

Getting the most out of Bulk Check requires some preparation before you click the check button. Without it, results will be incomplete or you will need to repeat the process unnecessarily.

• A complete domain list — collect every domain you manage, including key subdomains such as mail., www., and api. If any site uses HSTS with includeSubDomains, those subdomains need checking too.
• Current SSL and domain expiry dates — keep a baseline so you can compare against fresh Bulk Check results and spot changes quickly.
• A defined alert threshold — decide in advance what counts as "near expiry": 30 days or 60 days. This turns results into clear action items.
• A report delivery format — PDF, email or a shared dashboard? Agree with clients ahead of time so your monthly check round has a consistent, professional output.

Side-by-side: checking one at a time vs Bulk Check

The efficiency gap between manual checking and Bulk Check widens quickly as your portfolio grows. The table below makes the comparison concrete.

Domain health reports: what separates professional agencies

Successful agencies and freelancers share one common habit: they send regular domain health reports to clients instead of waiting for clients to report problems. The benefits go beyond avoiding emergencies.

• Build trust — clients see you are actively monitoring, not just collecting a retainer
• Easier renewals — the report is tangible proof of ongoing work, making contract renewal a formality
• Prevent problems before they happen — spot an SSL expiring in 30 days, renew it quietly, and the client never even knows a problem was approaching
• Reduce support load — unannounced DNS changes are caught in the monthly check round, not when the client calls to say the site is down

A good health report includes: the check date, every domain on your list, SSL status with expiry date, DNS/nameserver status, domain expiry date, and items requiring action next month. When you run Bulk Check and save the result as PDF, all of this is captured in a single file ready to forward to the client.

Frequently asked questions

Q: How is Bulk Check different from monitoring?

Bulk Check is a check "on the cadence you trigger", while monitoring is a system that watches continuously and alerts automatically. For most site managers, a monthly Bulk Check is enough and free of charge.

Q: How many domains per run?

It depends on the tool, but generally you can paste in dozens of domains per run. If you have more, split them into several batches.

Q: Can I check client sites on different hosting?

Yes — domain health tools check from the outside (DNS/SSL/WHOIS are public data) without needing access to that site's server.

Q: What does AsiaGB offer for multi-site managers?

AsiaGB has plans for resellers and multi-site managers — manage many domains in one account, with DirectAdmin and free auto-renewing SSL on every site.