IPLIST.NET - mailman.research.att.com
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mailman.research.att.com checked at 2025-11-04T13:11:00.508Z 2437ms 25/25/25 100% R:14mailman.research.att.com
| A | 135.207.255.58🇺🇸 AS6431 | ||||||
| PTR | h-135-207-255-58.research.att.com | ||||||
research.att.com
Starts with same word
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AI analysis
mailman.research.att.com points to a single IP number: 135.207.255.58.
Other host names, for instance h-135-207-255-58.research.att.com, share IP numbers with mailman.research.att.com. 
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