Vault-Tec’s phone number briefly appears on the screen in the Fallout TV series. It’s real, and you can call it right now — but a note of caution: it may ruin your day.

In the early scenes ofFalloutEpisode 6, Cooper Howard takes viewers on a tour ofVault 4, a “veritable Camelot of the nuclear age.” After lauding its lead casing (which keeps out “the rats… and the Reds”), he meets the Lawthorns, a family trialing the vault before thousands flee underground.

At the end of the commercial, Howard urges people to purchase a residence in aVault-Tecvault. “If the worst should happen tomorrow, the world is gonna need Americans just like you to build a better day after,” he says.

A phone number then appears on the screen:213-25-VAULT. Yes, you can phone it yourself right now, but you won’t be connected to a Vault-Tec operator: all you’ll hear is a man screaming in agony for 20 seconds before the line disconnects.

Bear in mind that additional charges may appear on your phone bill, depending on where you are. “That was f**king amazing. Worth the international call fee from Canada,” one Redditorwrote.

“I called that shit and got f**king scared,” another commented. “I’m wondering if this is some sort of legitimate easter egg. I doubt they just picked a random number to use, and I feel the decision to make it screams instead of some vault ad gimmick had to be purposeful,” a third speculated.

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As one fan pointed out, this isn’t an unprecedented gag in the Fallout franchise. First shared in Fallout 3 and revived for the fourth game, there’s another number you can call to secure a vault: 1-888-4-VAULTTEC. That one is decidedly more upbeat, so feel free to give it a ring and prepare for the future!

Fallout is streaming on Prime Video now. Find outeverything we know about Season 2,questions the second season needs to answer, and all ofthe main characters’ SPECIAL scores and perks.

Cameron Frew is Deputy TV & Movies Editor on Dexerto’s UK team. He’s an action movie aficionado, ’80s obsessive, and Oscars enthusiast. He loves Invincible, but he’s also a fan of The Boys, the MCU, The Chosen, and much more. He has previously written for LadBible, UniLad, and Flickering Myth. You can contact him at: cameron.frew@dexerto.com.