Autonomous system
AS6479 MCHENRY - McHenryCom Company
Residential ARIN
Summary
McHenryCom Company (MC.net)
isp legacy
McHenryCom Company, trading as MC.net — an independent internet service provider based in Cary, Illinois, serving the north-west Chicago suburbs.
What it's used for
- Residential and small-business internet access across McHenry, Lake, DuPage, Cook, and Kane counties in Illinois, plus web hosting and IT services.
- It announces
209.172.128.0/18(assigned to McHenryCom by ARIN in 1997) and an IPv6 /32. Reverse DNS across the space resolves undermc.net, including network gateways, which is the giveaway that this is a real access network rather than parked space.
Notable
- A genuinely small regional ISP holding a four-digit AS number: the ARIN record dates to April 1996, in the sequential run of assignments made across the mid-6400s.
- Independent ISPs of this vintage are increasingly rare in the US; most were bought out by cable and telco incumbents.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-07, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 16.38K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS6479- Registry name
- MCHENRY
- Registrant
- McHenryCom Company
- Abuse contact
- domains@mc.net
- Registered
- 1996-04-26
- Last changed
- 1999-10-14
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 2 with no ROA
- ROAs
- 0 authorising AS6479
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 3 naming AS6479
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 454 networks and 1,852 prefixes, as published 2026-11-08. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere