Data as of Nov 5, 2026
198.138.40.0/23
No anonymizer space · no proxy exits in 30 daysUrsinus College · space held by NTT America, Inc.
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 198.138.0.0/15 since Oct 2016 | AS2914 | Internet provider | 2 | NTT America, Inc. |
Network & registry
Origin network
AS53577
US
- Name
- Ursinus College
- Type
- Education
- Registered
- Jun 21, 2010
- Domain
- ursinus.edu
- Industry
- Colleges, Universities, and Professional Schools
- 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
- Jul 2010 · 16 yr
- Origin networks
- 2
- Last change of origin
- Jul 2010
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 198.138.40.0/23 | AS53577 | /24 | ARIN | RPKI valid |
| 198.138.0.0/15 | AS2914 | /15 | ARIN | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS53577 | RADB | Comcast Cable Communications, Inc. | MAINT-AS7922 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 198.
138. 0. 0/ 15 - Netname
- NTTA-198-138
- 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-198-138-0-0-1
- Parent
- NET-198-0-0-0-0
- Created
- Apr 14, 1993
- RIR
- ARIN
- Country
- US
- Delegated
- Apr 14, 1993
- Status
- assigned
Report abuse
Abuse contact
- abuse@
ntt. net - Name
- NTT America Abuse Contact
- Phone
- +1-877-688-6625
- Handle
- NAAC-ARIN