Data as of Nov 10, 2026
192.41.232.0/23
No anonymizer space · no proxy exits in 30 daysUniversity of Michigan · reallocated from Merit Network Inc.
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 192.41.232.0/22 since Jul 2007 | AS237 | Business | Merit Network Inc. |
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 |
|---|---|---|---|---|---|---|
| 192. | 2,560 | MICH-8 | Merit Network Inc. (MICH-Z) · US | Direct Allocation | Jul 26, 1988 | abuse@ |
| └ 192.41.232.0/23 | 512 | MICH-1766 | University of Michigan (UNIVER-118) · US | Reallocated | Oct 19, 2020 | — |
Network & registry
IPv4 market
Holder
- Organization
- Merit Network Inc.
- Handle
- MICH-Z
- Range
- 192.
41. 229. 0 - 192. 41. 238. 255 - Registration type
- Direct Allocation
- Record created
- Jul 26, 1988
- Legacy
- yes
- Reallocated to
- University of Michigan (UNIVER-118)
- Reallocated range
- 192.
41. 232. 0/ 23 - Reallocated
- Oct 19, 2020
Origin network
AS36375
US
- Name
- University of Michigan
- Type
- Education
- Registered
- Dec 16, 2005
- Domain
- umich.edu
- Industry
- Education Software
- Spamhaus ASN-DROP
- not listed
- Tor exits
- 1
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Apr 2008
- Current origin since
- Aug 2024 · 2.3 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 192.
41. 232. 0/ 23 - Netname
- MICH-1766
- Registrant
- University of Michigan
- Organization
- University of Michigan (UNIVER-118)
- Org address
- IT Communications Services, Ann Arbor, MI, 48105-3640
- Org country
- US
- Type
- Reallocated
- Handle
- NET-192-41-232-0-1
- Parent
- NET-192-41-229-0-1
- Created
- Oct 19, 2020
- RIR
- ARIN
- Country
- US
- Delegated
- Jul 26, 1988
- Status
- assigned
Report abuse
Abuse contact
- nobody@
example. com - Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN