Data as of Nov 7, 2026
138.5.248.0/21
No anonymizer space · no proxy exits in 30 daysVerizon Business · space held by State University of New York Downstate Health Sciences University
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 138.5.248.0/24 since Jun 2023 | AS209242 | Hosting | State University of New York Downstate Health Sciences University |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
2,048 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Business | 1,792 | 88% | 1 | |
| Hosting | 256 | 13% | 1 |
Network & registry
Origin network
AS7046
US
- Name
- Verizon Business
- Type
- Internet provider
- Registered
- Aug 5, 1996
- Domain
- verizonbusiness.com
- Industry
- Internet Service Provider (ISP)
- 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
- 138.
5. 0. 0/ 16 - Netname
- SNYBKLYN
- Registrant
- State University of New York Downstate Health Sciences University
- Organization
- State University of New York Downstate Health Sciences University (SHSC-Z)
- Org address
- 450 Clarkson Avenue, Brooklyn, NY, 11203
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-138-5-0-0-1
- Parent
- NET-138-0-0-0-0
- Created
- Dec 14, 1992
- RIR
- ARIN
- Country
- US
- Delegated
- Dec 14, 1992
- Status
- assigned
Report abuse
Abuse contact
- jason.
wei@ downstate. edu - Name
- Wei, Jason
- Phone
- +1-718-270-1994
- Handle
- JWE31-ARIN