Data as of Nov 4, 2026
204.139.64.0/18
No anonymizer space · no proxy exits in 30 daysAdventist Health System Sunbelt Healthcare Corporation · space held by Adventist Health Systems.
Announcements
Nesting
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More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 204.139.64.0/24 since May 2005 | AS18964 | Business | Adventist Health Systems. | |
| 204.139.66.0/24 since Aug 2024 | AS18964 | Business | Adventist Health Systems. | |
| 204.139.67.0/24 since Jun 2006 | AS18964 | Business | Adventist Health Systems. | |
| 204.139.84.0/24 since Dec 2008 | AS18964 | Business | Adventist Health Systems. | |
| 204.139.85.0/24 since Jul 2005 | AS18964 | Business | Adventist Health Systems. | |
| 204.139.87.0/24 since Jul 2005 | AS18964 | Business | Adventist Health Systems. | |
| 204.139.88.0/24 since Feb 2014 | AS18964 | Business | Adventist Health Systems. | |
| 204.139.96.0/24 since Nov 2022 | AS18964 | Business | Adventist Health Systems. | |
| 204.139.101.0/24 since May 2024 | AS18964 | Business | Adventist Health Systems. | |
| 204.139.102.0/24 since May 2024 | AS18964 | Business | Adventist Health Systems. | |
| 204.139.112.0/24 since Jul 2026 | AS18964 | Business | Adventist Health Systems. |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 204.139.64.0/18 | 16,384 | SSCI-2 | Adventist Health Systems. (AHS-20) · US | Direct Allocation | Jan 10, 1995 | [email protected] |
| └ 204.139.100.0/24 | 256 | NET-204-139-100-0-24 | unknown | — | — | — |
| └ 204.139.101.0/24 | 256 | NET-204-139-101-0-24 | Adventist Health Systems. (AHS-20) · US | Reassigned | May 20, 2024 | [email protected] |
| └ 204.139.102.0/24 | 256 | NET-204-139-102-0-24 | Adventist Health Systems. (AHS-20) · US | Reassigned | May 20, 2024 | [email protected] |
Network & registry
Origin network
AS18964
US
- Name
- Adventist Health System Sunbelt Healthcare Corporation
- Type
- Business
- Registered
- Nov 2, 2000
- Domain
- adventhealth.com
- Industry
- Hospitals and Medical Centers
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- Nov 2019 · 6.9 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 204.139.64.0/19 | AS18964 | RADB | RR-RC-AdventHealth-Florida | MAINT-RR | Jun 26, 2026 |
Whois
Registration for this announcement
- Range
- 204.139.64.0/18
- Netname
- SSCI-2
- Registrant
- Adventist Health Systems.
- Organization
- Adventist Health Systems. (AHS-20)
- Org address
- 902 Inspiration Ave, Altamonte Springs, FL, 32714
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-204-139-64-0-1
- Parent
- NET-204-0-0-0-0
- Created
- Jan 10, 1995
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 10, 1995
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- DNS Administrator
- Phone
- +1-407-718-8558
- Handle
- DNSAD93-ARIN