NPA-NXX - 630-621

This is the 630-621 subcode (NPA-NXX) prefix page. Follow a prefix to find the number you are looking for. We divide our pages up to make them more user friendly to navigate!

The 630-621 subcode mainly covers West Chicago in Dupage county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Illinois state. Many of the numbers in this subcode are Regular Landline registered to Level 3. We hear they employ a large number of people in the Illinois office.
Recently there have been an increase in reported calls, we've had over 916924 comments across our systems for the 630-621 subcode.

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713-345-4494 928-485-3561 325-728-1173 240-528-7234 505-351-4479
561-231-3346 912-275-2765 315-400-4451 484-925-3771 262-391-1476