- Jewish World of Wonders Kids Magazine
- JNP Media LLC
- Johnson Publ Co/Attn:Sub Dept
- JP Media LLC
- JSAN Publishing
- Justeen, LLC
- Kalmbach Publ Co
- Kansas Dept of Wildlife & Parks
- Kansas Tourism Office
- Kappa Publishing Group
- Keck Media LLC
- Kids Code & Computer Science, Inc.
- Kiplinger Washington Editors
- Kliger Heritage Media
- Laurea Media
- LeisureMedia 360
- Lippincott Williams & Wilkins
- Lonely Planet
- Long Thread Media LLC
- Louise Blouin Media
- Lumina Media
- Macfadden Communications Group
- Madavor Media Llc
- Maher Publ
- Maker Media Inc.
- Making Music Magazine
- Mango Life Media
- Mansueto Ventures LLC
- Maplegate Media Publishing
- Maritime Publishing
- Martha Stewart Living
- Marvel Entertainment Group Inc
- Maven
- MC Aby Publishing
- McLean Communications
- Media DC
- Media Out Loud, LLC
- Media360LLC
- Mental Floss Llc
- Meredith Corporation
- Metrocorp, Inc
- Midwest Outdoors
- Miller Sports Group
- Milwaukee Magazine Inc/Mcgeary
- MissouriLife
- MIT
- Modern Farmer Media
- Moffly Publications, Inc.
- Morris Media Network
- Morris Publishing Group
- Morris Visitor Publications
- Mother Jones
- Motor Trend Group
- Motorsports Marketing
- MovieMaker Magazine
- Murphos Publishing
- Music Maker Publications, Inc.
- National Audubon Society
- National Geographic Society
- National Review
- National Wildlife Federation
- Native Peoples
- Natural History Magazine Inc
- Network Journal
- Nevada Magazine
- New Bay Media, Llc
- New England Home
- New Hope Communications Llc
- New Jersey Monthly
- New Mexico Magazine
- New York Magazine
- NewsMax Media
- Newsweek, Inc
- North American Membership Group, Inc.
- Northwest Fly Fishing, LLC
- Northwoods Sporting Journal
- NPS Media Group
- Nylon Media, Inc.