Bank routing number ยท Irvine, California
Nano Banc Routing Number (ABA): 122245251
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The last primary routing number on Nano Banc's record is 122245251.
Nano Banc routing numbers on file
| Routing number | Type | Status | Source |
|---|---|---|---|
| 122245251 | Primary ABA | Bank failed, September 25, 2026 | FFIEC NIC |
Record refreshed here on October 25, 2026. NIC holds one primary number per bank; Nano Banc publishes any other numbers it uses itself.
What the digits mean
The first two digits, 12, place this number in the Federal Reserve Bank of San Francisco's district (District 12). Digits five through eight, 4525, identify the institution within that district. The last digit, 1, is a check digit, and the number passes the standard check: weight the nine digits 3, 7, 1, 3, 7, 1, 3, 7, 1 and the sum is a multiple of 10.
About Nano Banc
Nano Banc is headquartered in Irvine, California and was established in 2007. It is in the LOS ANGELES-LONG BEACH-ANAHEIM, CA metro area. It reported $736.2M in total assets and $685.8M in deposits for Q2 2026. See the largest banks in California by total assets. It reports 1 domestic office. Its deposits have been FDIC insured since 2007. Its primary federal regulator is the Federal Reserve. 6 other banks and credit unions headquartered in Irvine have a routing number listed here.
What the digits in 122245251 mean
The first four digits, 1222, are the Federal Reserve routing symbol. The prefix 12 places the number in the 12th Federal Reserve District (San Francisco). That is also the district where the bank is headquartered. Digits five through eight, 4525, identify the institution within its Federal Reserve district. The last digit, 1, is a check digit. Weighting the digits 3, 7 and 1 in turn gives 3 x 5 + 7 x 11 + 8 = 100, a multiple of 10, so 122245251 is a well-formed routing number. A mistyped digit almost always breaks that sum.
Routing numbers in Irvine, CA
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Regulator records: FDIC BankFind (cert 58590) · FFIEC NIC profile (RSSD 3635029)