How To Link Your BVN To Your Other Bank Accounts Online 

 
 
Following this directive by the CBN,

http://www.cenbank.org/Out/2015/BPSD/BVN%20LINKAGE%20OPTIONS.pdf

all banks are directed to link your BVN once you have it to your other existing accounts by email or sms or web portal or phone call. 
so, If you have your BVN already, here is how to link it to your other accounts without going to the bank.
A. firstly, ask their twitter customer care team if there is an sms code or online portal or email address you can send your bvn details to while waiting for the answer, 

B. google to see if there is an sms code for BVN linking for the bank,  

C. then google to see if there is an online portal for BVN linking for the bank,  

D. if not, and if the twitter team havnt answered, try their facebook customer care team,

E.call their customer care if all fails,  

F.and then if all these still fail, go to the bank.

Here are those i got my hands on already. Note that the list is not exhaustive.

ACCESS BANK 

BVN Linking by Text Message

With the Access BVN short code, you can link your BVN to your Access Bank Account. To do this, simply text BVN, your account number and BVN number to 20121. E.g: BVN 0123456189 78956834758 to 2021

check https://www.accessbankplc.com/bvn
OR 
BVN Linking online follow the link below

http://bvnlinking.accessbankplc.com:8080/bvnlinking/bvn.jsp
input your details and submit

DIAMOND BANK
BVN Linking online: follow the link below

http://www.diamondbank.com/mobilesite/index.php/component/content/article/2-uncategorised/606-bvn-enrolment-and-update
input your details and submit

ECOBANK
You have to go to their banking hall

FCMB
BVN Linking online

if you are registered for e-banking, go to your profile under ‘NO BVN LINK HERE’ and link
BVN Linking by email

send an email to cu*************@fc**.com 

containing

1. Account name

2. Account number

3. BVN number 

4. bank you initially registered and got your BVN number from
[source FCMB bank twitter team]

FIDELITY BANK

BVN Linking by email

send your account details, mobile number, BVN, bank/date of registration and date of birth via mail to tr********@fi**********.ng 
[source fidelity bank twitter team]
FIRST BANK
BVN Linking online: follow the link below
http://bvn.firstbanknigeria.com/form/
input your details and submit

GTBANK
BVN Linking online: follow the link below

https://gtmt.gtbank.com/BVNLinker/start.aspx
input your details and submit
or 
if you are registered for e-banking, go to your profile under self service and link

HERITAGE BANK
You have to go to their banking hall

KEYSTONE BANK
BVN Linking online: follow the link below
http://www.keystonebankng.com/bvnlink.php
input your details and submit
SKYEBANK
BVN Linking online

if you are registered for e-banking, go to your profile and link it from there,
or
BVN Linking by email
Send an email to. ye*******@sk********.com

containing

1. Account name

2. Account number

3. BVN number 

4. bank you initially registered and got your BVN number from

UBA
BVN Linking by Text Message

All a customer has to do is to send his or her valid BVN from the telephone number that was used to open their account to the short code number and it will become automatically linked,

*919*6# 

[source : https://www.ubagroup.com/mc/newsandevents/newstopic?id=20150706110121fc5jc6fnba ]
or 
BVN Linking online: follow the link below
Uba link
input your details and submit

ZENITH BANK
BVN Linking by twitter

DM your BVN, account number, phone number, DOB, bank where registration was done and date of registration to @ZenithBank
or
BVN Linking online

if you are registered for e-banking, go to your profile and link it from there,

or
BVN Linking by email
request for bvn update form from their twitter team @ZenithBank , fill and email to ze**********@ze********.com.    
[source Zenith bank twitter team]

OTHER BANKS  
thats all i could get my hands on, based on friend’s questions. however, if your bank isnt present here, once again,here is the procedure i used to find this information  

A. firstly, ask their twitter customer care team if there is an sms code or online portal or email address you can send your bvn details to while waiting for the answer, 

B. google to see if there is an sms code for BVN linking for the bank,  

C. then google to see if there is an online portal for BVN linking for the bank,  

D. if not, and if the twitter team havnt answered, try their facebook customer care team,

E.call their customer care if all fails,  

F.and then if all these still fail, go to the bank.