An address is not a recovery phrase.
Your public address is used to identify an account. A recovery phrase or private key controls access. These are not interchangeable. An explorer asks for public information, not the secrets used to authorize transactions.
InstaEth.com has no wallet connection flow. You can browse the directory, use the fee calculator, and open public explorer records without approving a connection or signing a message.
Make the destination a deliberate choice.
Before interacting with a site, check its actual domain rather than trusting a logo or a sponsored result. When using an address, verify the entire address and network. A recognizable beginning or ending is not enough.
Keep the secret parts secret.
Never put a recovery phrase or private key into a search box. Never share it with someone who contacts you claiming to offer support.
Know what you are being asked to approve.
Reading an explorer does not require a signature. Connecting a wallet, signing a message, authorizing a token allowance, and sending a transaction are different actions. Pause when a site asks for more permissions than the task needs.
An unsolicited token or message is not a reason to visit a claim page. A claim that you must act immediately deserves extra scrutiny. Use the original security resource linked below rather than a stranger's directions.
Build a calmer checking routine.
Keep these questions together: Is this the intended domain? Is this the intended network? Do I understand the action? Have I checked the destination? What permissions will remain afterward? There is no reward for rushing past a question you cannot answer.
For a read-only place to practice, use the Ethereum explorer search. For a clearer understanding of costs, visit Ethereum gas. Both tools work without connecting an account.