Data as of Nov 11, 2026
199.18.71.0/24
No anonymizer space · no proxy exits in 30 daysHamilton Connects · space held by OARnet
Announcement
this exact prefix
No RPKI
Announced by
Type
Unknown
Risk
30 / 100 · Medium
Recently moved
Recent change
New origin Sep 18, 2026
from AS33167 Southwest Ohio Computer Association
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 199.18.0.0/16 since May 2005 | AS600 | Business | 37 5 always on | OARnet |
Network & registry
Origin network
AS401724
US
- Name
- Hamilton Connects
- Type
- Internet provider
- Registered
- May 16, 2025
- Domain
- hamilton.k12.wi.us
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Sep 2021
- Current origin since
- Sep 18, 2026 · 2 mo
- Origin networks
- 2
- Last change of origin
- Sep 18, 2026
Recorded history
History
- Handoffs
- 1
- Also announced by
- 33167
Whois
Registration for this announcement
- Range
- 199.
18. 0. 0/ 16 - Netname
- NETBLK-OARNET-CBLK2
- Registrant
- OARnet
- Organization
- OARnet (OAR-Z)
- Org address
- 1224 Kinnear Road, Columbus, OH, 43212-1198
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-199-18-0-0-1
- Parent
- NET-199-0-0-0-0
- Created
- Sep 30, 1993
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 30, 1993
- Status
- assigned
Report abuse
Abuse contact
- support@
oar. net - Name
- Network Operations Center
- Phone
- +1-800-627-6420
- Handle
- NOC2069-ARIN