M & T BANK
Routing Number: 021906471
2ND FLOOR
AMHERST, NY 14228-0000
(800) 724-2240
1007 North Market Street
Wilmington, DE 19899
2301 Concord Pike
Wilmington, DE 19803
4300 Governor Printz Boulevard
Wilmington, DE 19802
2371 Limestone Road
Wilmington, DE 19808
15 Lea Boulevard
Wilmington, DE 19802
1207 North Union Street
Wilmington, DE 19806
3801 Kennett Pike
Wilmington, DE 19807
1812 Marsh Road
Wilmington, DE 19810
1100 North Market Street
Wilmington, DE 19801
4899 Limestone Road
Wilmington, DE 19808
2000 Pga Boulevard
North Palm Beach, FL 33408
207 West Bel Air Avenue
Aberdeen, MD 21001
1 Box Ridge Drive
Abingdon, MD 21009
67 West Street
Annapolis, MD 21401
2027 Somerville Road
Annapolis, MD 21401
901 Bestgate Rd
Annapolis, MD 21401
1230 Bay Dale Drive
Arnold, MD 21012
6417 Petrie Way
Baltimore, MD 21237
7210 Ambassador Road
Baltimore, MD 21244
2801 Smith Avenue
Baltimore, MD 21209
6900 York Road
Baltimore, MD 21212
4656 Wilkens Avenue
Baltimore, MD 21229
3800 East Lombard Street
Baltimore, MD 21224
Bwi Airport
Baltimore, MD 21240
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Frequently asked questions (FAQs) about international bank routing codes

They told me to use routing number 021000021 for funds coming from US and swift code ROYCCAT2 for other countries. I think to can live chat with them or call 1-866-822-6446 for your wire transfer.
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It varies from bank to bank and country to country. You can call Prosperity at 800-531-1401 for more information.
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I found these routing numbers for Union bank: California - 122000496, Former Frontier Bank - 122000496, Oregon - 123000068, Washington - 125000118. Call Union Bank at 800-238-4486 for accurate info
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