How do I know how much time was given to me to stay in the USA?

I came in the USA on a 10 year multiple visa. On February 5, 2016 the immigration officer didn't stamp how long I can be in the USA. How do I know how much time I have to stay in the USA?
Best Answer
The immigration officer should have written/stamped the date on your passport, however if they didn't you can find the details on your I94 record on the CBP website at http://www.cbp.gov/i94
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How do I find my U.S. entry record?
Students may view their U.S. travel history online through the U.S. Customs and Border Patrol Website (https://i94.cbp.dhs.gov/I94). (Please note that the travel history is different from the I-94 record used to provide proof of legal entry to the U.S.)How do I check my travel history?
Steps to check your U.S. travel history onlineHow long are you legally allowed to stay in the US?
The quick answer to the question of how long a visitor can lawfully stay in the United States for most people is six months. To be more precise, once an admission is determined to be \u201cfair and reasonable,\u201d the default position is that the visitor is granted a six month time period to stay.How do I know how long my visa is?
For nonimmigrant visas, call 1-603-334-0888. Or use the Consular Electronic Application Center (CEAC). Abroad: Contact the U.S. Embassy or consulate where you filed your application.MAXIMUN STAY IN USA ON VISITOR VISA (B1 B2)
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Answer 2
The I-94 is electronic. They also usually stamp the Admit Until date of the I-94 underneath the entry stamp for your convenience (so you don't have to look it up online), but sometimes they forget. In any case, it's the I-94 that's authoritative. (It's always a good idea to look up the I-94 anyway, because sometimes the dates don't match.)
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