As you have asked about the IFSC code details of the Punjab National Bank Rajarajeshwari (RR) Nagar branch, I am giving you information about it, check below for the details

Bank: PUNJAB NATIONAL BANK

Address:
227,8TH MAIN,SAI VAIBHAV BLDG.
R.RAJESHWARI NAGAR,
BANGALORE KARNATAKA 560098
State: KARNATAKA

District: BANGALORE URBAN
Branch: RAJARAJESHWARI NAGAR, BANGALORE
Contact: 7184850071

IFSC Code:
PUNB0772000 (used for RTGS, IMPS and NEFT transactions)

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

MICR Code: 560024036

You can also take help of branch locator tool to get the details
To use it
Go to PNB website
Select the branch locator tool under the ATM & Branch Network,
The page open look like



Here you will get the details.