Autonomous system
AS10747 EPIC-HOSTING
Hosting ARIN
Summary
Epic Hosting, LLC
hosting enterprise legacy
EPIC-HOSTING is Epic Hosting, LLC, registered at Verona, Wisconsin — the campus of Epic Systems, the electronic health record vendor. This is not a general-purpose web host that happens to be called Epic. It is the hosting arm that runs Epic's EHR software on behalf of the hospitals and health systems that license it.
What it's used for
RIS observes 24 announced IPv4 prefixes carrying 15,360 addresses, no IPv6, and 8 observed neighbours. The reverse DNS makes the workload unambiguous: every sampled address resolves under epichosted.com, and the labels name Epic's products — a-mychart.et1369.epichosted.com, a-epiccarelink.et0798.epichosted.com, b-epiccarelink.et1532.epichosted.com, plus pauth and access endpoints under access.epichosted.com.
The pattern inside those names is the interesting part. Each host carries an et#### token, and the same token recurs across different product hostnames. That reads as a per-tenant identifier: one health system gets an environment number, and its MyChart patient portal, its Care Everywhere/Care Link exchange endpoint and its authentication front end all live under it. The a-/b- prefixes and a -np suffix seen on one host are the giveaways of paired production instances and a non-production environment beside them.
Notable
Eight neighbours against 24 prefixes is a hosting edge, not a carrier: enough upstreams and peers for resilient patient-facing access, no peering business of its own. The address space is heavily deaggregated into /22s and /23s from four separate parent ranges (64.18.144.0/20, 170.133.208.0/20, 208.56.192.0/20, 45.42.32.0/22), consistent with per-tenant or per-site segmentation across data centres.
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.
Transit providers
7 upstream, 0 downstream and 7 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-19, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 9 prefixes · 14.59K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 9 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS10747- Registry name
- EPIC-HOSTING
- Registrant
- Epic Hosting, LLC
- Abuse contact
- ipeng@epichosted.com
- Registered
- 2016-08-08
- Last changed
- 2016-08-08
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 25 valid, 0 with no ROA
- ROAs
- 8 authorising AS10747
- ASPA
- no ASPA record
- IRR
- 100% registered · 25 of 25 announcements
- Route objects
- 91 naming AS10747
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
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: 442 networks and 1,783 prefixes, as published 2026-10-20. 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