Max AccountRoot size

accounrootsize.txt

https://xrpl.org/accountroot.html

Field                Size (bits)
================================
index                        256
LedgerEntryType               16
Account                      160
Balance                       64
PreviousTxnID                256
PreviousTxnLgrSeq             32
Sequence                      32
--------------------------------
REQUIRED FIELDS SUBTOTAL:    816 bits (102 bytes)

AccountTxnID                 256
Domain                      2048* (variable; max 256 bytes)
Flags                         32 (omitted if the value is 0)
EmailHash                    128
MessageKey                   264
OwnerCount                    32 (omitted if it's 0)
RegularKey                   160
TicketCount                   32* (requires Tickets amendment; can't currently be set)
TickSize                       8
TransferRate                  32
WalletLocator                256
--------------------------------
MAXIMUM THEORETICAL SIZE:   4064 bits (508 bytes)

WalletSize (32 bits) omitted because no current transaction can set this field and no extant accounts have it.