As you have asked about the IFSC code and address of the Union Bank Of India Ezra Street Branch, I am giving you information about it, check below for the details

Bank: UNION BANK OF INDIA

Address:
55/58, EZRA STREET, POST BOX NO. 2479,
KOLKATA, WEST BENGAL,PIN - 700 001.

State: WEST BENGAL
District: KOLKATA
Branch: EZRA STREET - KOLKATA

IFSC Code:
UBIN0530158 (used for RTGS, IMPS and NEFT transactions)

Branch Code:
Last six characters of IFSC Code represent Branch code.

MICR Code:
700026002

You can also use the branch locator tool to get the details.
To use it
Go to Union Bank of India website
Click on Show and then click on Find ATM/ Branch, the page open look like


Here enter the required details and you will get the information.