As you have asked about the address and IFSC code details of the Union Bank of India Port Blair branch, I am giving you information about it, check below for the details

Bank: UNION BANK OF INDIA

Address:
110.Gandhi Bhavan, Aberdeen Bazar,
Port Blair, Dist. Andaman,
Andaman-Nicobar Island

State: ANDAMAN & NICOBAR
District: PORT BLAIR
Branch: PORT BLAIR
Contact: (03192) - 233344

IFSC Code:
UBIN0563854 (used for RTGS, IMPS and NEFT transactions)

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

MICR Code: 744026002

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




Here enter the details and you will get the information.