Data as of Nov 5, 2026
63.115.50.0/24
No anonymizer space · no proxy exits in 30 daysInstructional Systems Inc. · space held by Verizon Business
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 63.112.0.0/12 | AS701 | Internet provider | 290 22 always on | Verizon Business |
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 |
|---|---|---|---|---|---|---|
| 63.64.0.0/10 | 4,194,304 | UUNET63 | Verizon Business (MCICS) · US | Direct Allocation | Jan 22, 1999 | abuse@ |
| └ 63.115.50.0/24 | 256 | UU-63-115-50-D5 | Instructional Systems Inc (C00851142) · US | Reassigned | Jul 2, 2004 | abuse@ via UUNET63 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
IPv4 market
Holder
- Organization
- Verizon Business
- Handle
- MCICS
- Range
- 63.
64. 0. 0/ 10 - Registration type
- Direct Allocation
- Record created
- Jan 22, 1999
Origin network
AS18728
US
- Name
- Instructional Systems Inc.
- Type
- Business
- Registered
- Oct 3, 2000
- Domain
- isinj.com
- Industry
- Software Development
- 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
- May 2005 · 21 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 63.115.50.0/24 | AS18728 | /24 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 63.
115. 50. 0/ 24 - Netname
- UU-63-115-50-D5
- Registrant
- Instructional Systems Inc
- Organization
- Instructional Systems Inc (C00851142)
- Type
- Reassigned
- Handle
- NET-63-115-50-0-1
- Parent
- NET-63-64-0-0-1
- Created
- Jul 2, 2004
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 22, 1999
- Status
- assigned
Report abuse
Abuse contact
- abuse@
verizon. com - Name
- Abuse
- Phone
- +1-800-900-0241
- Handle
- ABUSE5603-ARIN