Autonomous system
AS33756 CHC-ASN-A
Unclassified ARIN
Summary
The Children's Hospital Corporation
healthcare enterprise business
CHC-ASN-A is operated by The Children's Hospital Corporation.
What it's used for
- The address space is registered under the netname
CHC-IPV4-Afor The Children's Hospital Corporation, indicating an internal corporate network for a healthcare provider. - The AS announces 512 IPv4 addresses within a single prefix (
207.186.204.0/23) and one IPv6 prefix (2602:811:a000::/40). With only 1 observed neighbour, this configuration reflects a small, self-contained enterprise network rather than a transit or access provider.
Notable
- The RDAP registrant for the announced prefix matches the AS holder, confirming direct ownership of the address space.
- The inventory consists of a single contiguous IPv4 block and one IPv6 prefix, typical of a site-specific corporate allocation.
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
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Boston Internet Exchange | Boston, United States | 206.108.236.73 |
Transit providers
1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS40127 | Longwood Medical and Academic Area (LMA) | 97 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, 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 · 512 addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS33756- Registry name
- CHC-ASN-A
- Registrant
- The Children's Hospital Corporation
- Abuse contact
- ian.underwood@childrens.harvard.edu
- Registered
- 2023-08-11
- Last changed
- 2023-08-11
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 2 valid, 0 with no ROA
- ROAs
- 2 authorising AS33756
- ASPA
- 1 declared providers
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 11 naming AS33756
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
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: 431 networks and 1,775 prefixes, as published 2026-10-11. 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