Data as of Nov 3, 2026
205.157.136.0/24
No anonymizer space · no proxy exits in 30 daysDavid M. Schwarz Architects, Inc. · space held by NTT America, Inc.
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 205.157.128.0/20 since Aug 2016 | AS2914 | Internet provider | NTT America, Inc. |
Network & registry
Origin network
AS54121
US
- Name
- David M. Schwarz Architects, Inc.
- Type
- Business
- Registered
- Oct 7, 2011
- Domain
- dmsas.com
- Industry
- Service
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- Dec 2011 · 15 yr
- Origin networks
- 2
- Last change of origin
- Dec 2011
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 205.157.136.0/24 | AS54121 | /24 | ARIN | RPKI valid |
| 205.157.128.0/20 | AS2914 | /20 | ARIN | Another network |
Whois
Registration for this announcement
- Range
- 205.157.128.0/20
- Netname
- NTTA-205-157-128
- Registrant
- NTT America, Inc.
- Organization
- NTT America, Inc. (NTTAM-1)
- Org address
- 15809 Bear Creek Pkwy, Redmond, WA, 98052
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-205-157-128-0-1
- Parent
- NET-205-0-0-0-0
- Created
- Mar 24, 1995
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 24, 1995
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- NTT America Abuse Contact
- Phone
- +1-877-688-6625
- Handle
- NAAC-ARIN