Data as of Nov 9, 2026
155.139.112.0/21
No anonymizer space · no proxy exits in 30 daysDetroit Medical Center · space held by Tenet HealthSystem Medical, Inc.
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 155.139.115.0/24 since Aug 2026 | AS19398 | Business | Tenet HealthSystem Medical, Inc. | |
| 155.139.116.0/23 since Dec 2023 | AS19398 | Business | Tenet HealthSystem Medical, Inc. |
Network & registry
Origin network
AS25609
US
- Name
- Detroit Medical Center
- Type
- Business
- Registered
- Apr 8, 2002
- Domain
- dmc.org
- Industry
- Health Care Services
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Jun 2023
- Current origin since
- Jun 2023 · 3.4 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 155.
139. 0. 0/ 16 - Netname
- THM36Z-NETWORK1
- Registrant
- Tenet HealthSystem Medical, Inc.
- Organization
- Tenet HealthSystem Medical, Inc. (THM-36-Z)
- Org address
- 14201 Dallas Parkway, Dallas, TX, 75254
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-155-139-0-0-1
- Parent
- NET-155-0-0-0-0
- Created
- Nov 12, 1991
- RIR
- ARIN
- Country
- US
- Delegated
- Nov 12, 1991
- Status
- assigned
Report abuse
Abuse contact
- nobody@
example. com - Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN