Data as of Nov 14, 2026
156.40.53.0/24
No anonymizer space · no proxy exits in 30 daysNational Institutes of Health
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | RPKI |
|---|---|---|---|---|
| 156.40.0.0/16 since May 2020 | AS3527 | Business | 1 |
Network & registry
Origin network
AS30387
US
- Name
- National Institutes of Health
- Type
- Business
- Registered
- Sep 26, 2003
- 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
- Stable
- First seen
- Aug 2015
- Current origin since
- Aug 2015 · 11 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 156.40.53.0/24 | AS30387 | /25 | ARIN | RPKI valid |
| 156.40.0.0/18 | AS3527 | /25 | ARIN | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS30387 | ARIN | 9000 Rockville Pike | MNT-NIH-Z | Jun 12, 2025 |
Whois
Registration for this announcement
- Range
- 156.
40. 0. 0 - 156. 40. 92. 255 - Netname
- NIHNET-3
- 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-156-40-0-0-1
- Parent
- NET-156-0-0-0-0
- Created
- Dec 9, 1991
- RIR
- ARIN
- Country
- US
- Delegated
- Dec 9, 1991
- Status
- assigned
Report abuse
Abuse contact
- citnsarin@
mail. nih. gov - Name
- NIHtechs
- Phone
- +1-301-402-3141
- Handle
- NIHTE-ARIN