Long shot, but worth calling.

Grand River Mutual Telephone Corporation issued these blocks a while back. Most of the numbers are probably already with customers, but it's worth calling any you're interested in. If a number isn't in service, it might still be available at Grand River Mutual Telephone Corporation or one of their resellers.

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About Grand River Mutual Telephone Corporation

Grand River Mutual Telephone Corporation, doing business as GRM Networks, is an incumbent local exchange carrier (ILEC) providing local telephone, DSL, and fiber broadband services in rural areas of northern Missouri and southern Iowa across 44 exchanges covering 4,500 square miles. It primarily serves consumers in small communities such as Princeton, Bethany, Leon, Lamoni, and Trenton, with subsidiaries LTC Networks and SCC Networks operating additional exchanges. As a member-owned cooperative, it focuses on upgrading to fiber-to-the-premise networks while maintaining traditional wireline services.

Sources: Grand River Mutual Telephone - Wikipedia · Grand River Mutual Telephone Corporation (Telephone - ILEC) - EFIS · About Us - GRM Networks · Network Management Policy - GRM Networks

HQ: Princeton, MO

Street view of Grand River Mutual Telephone Corporation HQ
Street view
Satellite view of Grand River Mutual Telephone Corporation HQ
Satellite

Block portfolio at a glance

Area codes

NPABlocksRecentLast
641 53 · ·
660 44 · ·

States

StateBlocksRecent
IA 53 ·
MO 44 ·

Sister OCNs under Grand River Mutual Telephone Corporation

OCNCompanyTotalRecent
1094 South Central Communications Inc 3 0
1932 Lathrop Telephone Company 2 0
4411 Grand River Mutual Telephone Corporation - IA 0 0
4412 Grand River Mutual Telephone Corporation - MO 0 0