Data as of Nov 6, 2026
161.223.0.0/16
No anonymizer space · no proxy exits in 30 daysIndian Health Service
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 161.223.90.0/23 since Jun 2015 | AS5766 | Business | Indian Health Service | |
| 161.223.92.0/24 since May 2005 | AS5766 | Business | Indian Health Service | |
| 161.223.186.0/24 since Feb 2025 | AS396982 | Hosting | Indian Health Service | |
| 161.223.187.0/24 since Mar 2025 | AS14618 | Hosting | Indian Health Service | |
| 161.223.188.0/24 since Mar 2025 | AS16509 | Hosting | Indian Health Service | |
| 161.223.190.0/23 since Mar 2026 | AS5766 | Business | Indian Health Service |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
65,536 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Business | 64,768 | 99% | 7 | |
| Hosting | 768 | 1.2% | 3 |
Network & registry
Origin network
AS5766
US
- Name
- Indian Health Service
- Type
- Business
- Registered
- Oct 12, 1995
- Domain
- ihs.gov
- Industry
- Government and Public Administration
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Feb 2008
- Current origin since
- Feb 2008 · 19 yr
- Origin networks
- 3
- Last change of origin
- Apr 2020
Recorded history
History
- Handoffs
- 2
Whois
Registration for this announcement
- Range
- 161.
223. 0. 0/ 16 - Netname
- IHS-BNET
- Registrant
- Indian Health Service
- Organization
- Indian Health Service (IHS-2-Z)
- Org address
- 5300 Homestead Rd NE, Albuquerque, NM, 87110
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-161-223-0-0-1
- Parent
- NET-161-0-0-0-0
- Created
- Mar 1, 1993
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 1, 1993
- Status
- assigned
Report abuse
Abuse contact
- NOSC@
IHS. GOV - Name
- NOSC, IHS
- Phone
- +1-855-447-6672
- Handle
- NOSCI-ARIN