Prospect packs / leads by city / Naperville

Naperville, IL: 59 local businesses with a website problem you can fix

For web designers, agencies and freelancers looking for clients in Naperville. Each business below was found on public map listings and its website was checked between 2026-10-06 and 2026-10-11. The problems are measured, not guessed, and every row in a pack carries the evidence, so your first message can name the exact fault.

248sites with at least one defect

59with an urgent defect

2026-10-11last checked

Get 10 free Naperville, IL rows - no payment, no sign-up: we email you 10 rows (business, website, the defects, the evidence) for Naperville, starting with the restaurant rows unless you name another type. Then Order the Naperville, IL pack ($49) or Exclusive for 90 days ($149).

What is broken

Urgent defect	Businesses
Site does not load at all	21
Home page answers with an error code	16
No HTTPS - browsers mark it 'Not secure'	9
Email in the business's name can be forged (no DMARC)	7
HTTPS page pulls insecure http content	4
Out-of-date WordPress	2
WordPress version with published security fixes missing	2
Bare domain (without www) does not load	1

A business can have more than one.

Which businesses

Business type	With an urgent defect
Restaurant	6
Dentist	5
Clinic	4
Lawyer	3
Builder	3
Massage	3
Hairdresser	3
Veterinary	2
Car repair	2
Alternative	2

Five anonymised rows

Names and addresses are hidden here; the pack has them.

Type	Website	Platform	What is wrong	Checked
Security	`n**************.com`	custom / unknown	no working HTTPS - browsers mark the site 'Not secure' and search engines rank it lower the site runs WordPress 4.9, a 2017 release that has missed years of core updates - out-of-date WordPress is a common way small-business sites get hacked 1 image over 1 MB on the home page - the page loads slowly on mobile data and Google scores it down	2026-10-08
Roofer	`n*******************.com`	custom / unknown	the home page answers HTTP 502 no working HTTPS - browsers mark the site 'Not secure' and search engines rank it lower no mobile viewport tag - the site renders as a shrunken desktop page on phones, where most local customers look	2026-10-06
Clothes	`p**************.com`	custom / unknown	the home page answers HTTP 404 no working HTTPS - browsers mark the site 'Not secure' and search engines rank it lower no mobile viewport tag - the site renders as a shrunken desktop page on phones, where most local customers look	2026-10-06
Car parts	`a********.com`	custom / unknown	13 of the site's own links are dead (502, 502, 502, 502, 502) its domain without the www does not open - anyone who types the short address gets an error page instead of your site no mobile viewport tag - the site renders as a shrunken desktop page on phones, where most local customers look	2026-10-06
Accountant	`a**********.net`	custom / unknown	the home page answers HTTP 409 no mobile viewport tag - the site renders as a shrunken desktop page on phones, where most local customers look the home page has no <title>, so the Google result shows the bare address	2026-10-06

How it works

Email s.n.psaradellis@gmail.com or use a link above. Name the city, a business type if you want one, and where you will use the list.
Every row is re-checked before it ships, so a site fixed since 2026-10-11 is dropped, not sold.
No personal email addresses are sold, and any business that asked not to be contacted is removed.
Pay by card after you have seen the free rows. $49 for the urgent-defect pack, $149 to keep the city to yourself for 90 days.

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Who

Stephen Psaradellis, Arlington Heights, Illinois. The scanner and the fixes are run with an AI system I operate; I am responsible for the data and the work. More on the prospect packs page.

Business names, types and locations (c) OpenStreetMap contributors, https://www.openstreetmap.org/copyright. This pack is a database derived from OpenStreetMap and is made available under the Open Database License (ODbL) 1.0, https://opendatacommons.org/licenses/odbl/1-0/ . The defect columns come from our own scans.