AS11656 MMO-17-44144

MMO-17-44144 is the network of Medical Mutual of Ohio, the Cleveland-based health insurer. RIS sees 8 IPv4 prefixes, 2,048 addresses, no IPv6, and 4 observed BGP neighbours.

What it's used for

Enterprise connectivity for a health plan. The inventory is eight contiguous /24s from 66.111.16.0 through 66.111.29.0, every one of them registered to Medical Mutual itself under the netblock handle MMOH-DOM — self-held provider-independent space, announced as individual /24s rather than an aggregate so that inbound traffic can be steered across the four upstreams. Nothing is registered to a third party; there is no leased-address shape here at all.

What sits in the space is the public edge of an insurance company: member and provider portals, claims and eligibility interfaces, secure file exchange with employers and healthcare providers, and remote access for staff. A sampled address answers as www-r.medmutual.com, which anchors the identification — medmutual.com is Medical Mutual of Ohio's domain, and the MMOH in the netblock handle is the same abbreviation.

Notable

The holder string is worth a second look, because "Medical Mutual" on its own is ambiguous: several unrelated American insurers use the name, including medical-liability mutuals in other states. Two independent pieces of evidence resolve it to the Ohio health plan — the reverse DNS under medmutual.com, and the MMOH netblock handle. The AS name itself, MMO-17-44144, carries no meaning to an outsider; it is an internal registry code, a good reminder that ASN handles are frequently just filing references rather than descriptions.