Data as of Nov 13, 2026
165.112.136.0/21
No anonymizer space · no proxy exits in 30 daysNational Institutes of Health
Announcement
this exact prefix
RPKI valid
Announced by
Type
Business
Recent change
New origin Sep 18, 2026
from AS30387 National Institutes of Health
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 165.112.0.0/16 since Feb 2020 | AS3527 | Business | National Institutes of Health |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 165.112.140.0/24 since May 2020 | AS393689 | Business | National Institutes of Health |
Network & registry
Origin network
AS3527
US
- Name
- National Institutes of Health
- Type
- Business
- Registered
- Apr 7, 1994
- Domain
- nih.gov
- Industry
- Government and Regulatory Agencies, Administrations, Departments, and Services
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Aug 2009
- Current origin since
- Sep 18, 2026 · 2 mo
- Origin networks
- 2
- Last change of origin
- Sep 18, 2026
Recorded history
History
- Handoffs
- 3
- Also announced by
- 30387
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 165.112.136.0/21 | AS30387 | /27 | ARIN | Another network |
| 165.112.0.0/16 | AS3527 | /25 | ARIN | RPKI valid |
IRR
Route objects on the exact prefix
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 165.112.137.0/24 | AS3527 | RADB | Proxy-registered route object for NIH | MAINT-AS10886 | Nov 13, 2023 |
| 165.112.138.0/24 | AS3527 | RADB | Proxy-registered route object for NIH | MAINT-AS10886 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 165.
112. 0. 0/ 16 - Netname
- NIHNET-4-B
- Registrant
- National Institutes of Health
- Organization
- National Institutes of Health (NIH-Z)
- Org address
- 9000 Rockville Pike, Bethesda, MD, 20892-4805
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-165-112-0-0-1
- Parent
- NET-165-0-0-0-0
- Created
- May 19, 1993
- RIR
- ARIN
- Country
- US
- Delegated
- May 19, 1993
- Status
- assigned
Report abuse
Abuse contact
- citnsarin@
mail. nih. gov - Name
- NIHtechs
- Phone
- +1-301-402-3141
- Handle
- NIHTE-ARIN