Data as of Nov 4, 2026
209.201.74.0/23
No anonymizer space · no proxy exits in 30 daysUniversity of Maryland · reallocated from CenturyLink Communications, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 209.201.0.0/17 since May 2005 | AS209 | Residential | 24 3 always on | CenturyLink Communications, LLC |
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 |
|---|---|---|---|---|---|---|
| 209.201.0.0/17 | 32,768 | CENTURYLINK-LEGACY-QWEST-INET-4 | CenturyLink Communications, LLC (CCL-534) · US | Direct Allocation | Mar 20, 2000 | [email protected] |
| └ 209.201.74.0/23 | 512 | MAX-LUMEN-209-201-74-0--23 | University of Maryland (UNIVER-262) · US | Reallocated | Apr 18, 2025 | — |
Network & registry
IPv4 market
Holder
- Organization
- CenturyLink Communications, LLC
- Handle
- CCL-534
- Range
- 209.201.0.0/17
- Registration type
- Direct Allocation
- Record created
- Mar 20, 2000
- Reallocated to
- University of Maryland (UNIVER-262)
- Reallocated range
- 209.201.74.0/23
- Reallocated
- Apr 18, 2025
Origin network
AS10886
US
- Name
- University of Maryland
- Type
- Education
- Registered
- Dec 17, 1997
- Domain
- umd.edu
- Website
- www.maxgigapop.net
- 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
- Oct 2014 · 12 yr
- Origin networks
- 3
- Last change of origin
- Oct 2014
Recorded history
History
- Handoffs
- 2
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS10886 | RADB | Mid-Atlantic Crossroads | MAINT-AS10886 | Nov 13, 2023 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 209.201.75.0/24 | AS10886 | RADB | Mid-Atlantic Crossroads | MAINT-AS10886 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 209.201.74.0/23
- Netname
- MAX-LUMEN-209-201-74-0--23
- Registrant
- University of Maryland
- Organization
- University of Maryland (UNIVER-262)
- Org address
- Office of Information Technology, College Park, MD, 20742
- Org country
- US
- Type
- Reallocated
- Handle
- NET-209-201-74-0-1
- Parent
- NET-209-201-0-0-1
- Created
- Apr 18, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 20, 2000
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- Centurylink Abuse Desk
- Phone
- +1-877-886-6515
- Handle
- CAD54-ARIN