This appears to be an SMS center number.
Is This AT&T SMS Center Hacking Your Phone? - +1 312-314-9810 ((312) 314-9810)
Summary — +13123149810
Expert Opinion
Turns out the number keeps popping up as a back‑door for AT&T’s SMS center, but users are reporting it as a conduit for message hijacking and phishing. If you see unexpected forwards, voicemail redirects, or strange carrier‑level prompts, treat it as a red flag. Reset your device’s network settings, delete any unknown SMSC entries, and re‑enable two‑factor authentication on all accounts. Consider switching to a fresh SIM or a different carrier if the problem persists. And always verify any unsolicited offers before clicking links – a little vigilance can stop a lot of spam and scam activity.
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Rate this number — +13123149810
Recent Reports for (312) 314-9810
This appears to be a remote user.
Interestingly, this number appeared on my cell phone yesterday, and it seems all my outgoing texts were redirected to it; to find this number, go to your phone's settings and click on text messages
Someone instructed me to refer to them as Casey when they called.
I recieved a call on saturday 11-19-11 at 10:42AM EST
I found this number in my husband's email with '121' after it, and I'm wondering if it might be a chat line
Apparently, this number is linked to my voicemail and also sends texts.
My life has been turned upside down, with this number seemingly being used to harass me personally, and it's linked to around 30 case numbers, with all my calls being forwarded to this number, and the harassment has been ongoing for about four weeks, affecting both my financial and personal life.
I have been receiving unsolicited jokes on my Net10 phone from this number, which not only cost me time but also money to open and view. This is a form of harassment and is against the law, and I demand that it be stopped.
A call was received on a boyfriend's phone from this Milwaukee area number, but attempts to call back were unsuccessful, and texting revealed the number was not in service
I'm concerned about the motives behind these calls and what they might want from my family members.
I want to discontinue the service, so I wish they stop calling me from this number
It has been confirmed that 312-314-9810 is a legitimate Cingular service center number.