Autonomous system
AS31816 NMDP
Unclassified ARIN
Summary
National Marrow Donor Program
nonprofit healthcare business internal
NMDP is the autonomous system for the National Marrow Donor Program.
What it's used for
- The space carries internal corporate infrastructure, evidenced by reverse DNS entries such as
ftp1.nmdp.org,dev1-runtime.nmdp.org, anddiy-mn4-vip.marrow.org. - The AS announces 768 IPv4 addresses across 3 prefixes with only 2 observed neighbours, indicating a small, self-contained internal network rather than a transit or access provider.
Notable
- Registrants for all three prefixes are consistent with the announcer, listing "National Marrow Donor Program" and "Network Services".
- The organization was formerly known as Be The Match, a name change reflected in its current branding and web presence.
- The address inventory consists of three /24 blocks, all located in the United States, with no IPv6 prefixes announced.
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 2026-10-21, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 768 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 3 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS31816- Registry name
- NMDP
- Registrant
- National Marrow Donor Program
- Abuse contact
- netsvc@nmdp.org
- Registered
- 2003-12-30
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 3 with no ROA
- ROAs
- 0 authorising AS31816
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 4 naming AS31816
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: 442 networks and 1,779 prefixes, as published 2026-10-22. 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