World wlan / wifi frequencies for ieee802.11b/g

IEEE802.11b/g Wifi/Wlan networks are all working on below frequencies. A wifi jammer could blocking the frequencies form 2.4GHz to 2.5GHz, coving all of the IEEE802.11 wifi networks.

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Channel Identifier	Frequency (MHz)	Americas	EMEA	Japan	Rest of World
1	2412	X	X	X	X
2	2417	X	X	X	X
3	2422	X	X	X	X
4	2427	X	X	X	X
5	2432	X	X	X	X
6	2437	X	X	X	X
7	2442	X	X	X	X
8	2447	X	X	X	X
9	2452	X	X	X	X
10	2457	X	X	X	X
11	2462	X	X	X	X
12	2467	-	X	X	X
13	2472	-	X	X	X
14	2484	-	-	X	-

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World wlan / wifi frequencies for ieee802.11b/g