Data as of Nov 8, 2026
204.57.104.0/22
No anonymizer space · no proxy exits in 30 daysLeander Independent School District · reallocated from Level 3 Parent, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 204.57.64.0/18 since Oct 2016 | AS3549 | Internet provider | 2 | Level 3 Parent, 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 |
|---|---|---|---|---|---|---|
| 204.57.64.0/18 | 16,384 | TWTC-NETBLK-15 | Level 3 Parent, LLC (LPL-141) · US | Direct Allocation | Sep 27, 1994 | abuse@ |
| └ 204.57.104.0/22 | 1,024 | TWTC-AUSU-C-LISD-02 | Leander Independent School District (LISD-1) · US | Reallocated | Feb 14, 2003 | — |
Network & registry
IPv4 market
Holder
- Organization
- Level 3 Parent, LLC
- Handle
- LPL-141
- Range
- 204.
57. 64. 0/ 18 - Registration type
- Direct Allocation
- Record created
- Sep 27, 1994
- Legacy
- yes
- Reallocated to
- Leander Independent School District (LISD-1)
- Reallocated range
- 204.
57. 104. 0/ 22 - Reallocated
- Feb 14, 2003
Origin network
AS393769
US
- Name
- Leander Independent School District
- Type
- Education
- Registered
- Jan 9, 2015
- Domain
- leanderisd.org
- 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
- Jan 2015 · 12 yr
- Origin networks
- 2
- Last change of origin
- Jan 2015
Recorded history
History
- Handoffs
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS393769 | RADB | Added on behalf of Leander ISD by Grande Communications | MAINT-AS7459 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 204.
57. 104. 0/ 22 - Netname
- TWTC-AUSU-C-LISD-02
- Registrant
- Leander Independent School District
- Organization
- Leander Independent School District (LISD-1)
- Org address
- P.O.Box 218, Leander, TX, 78646
- Org country
- US
- Type
- Reallocated
- Handle
- NET-204-57-104-0-1
- Parent
- NET-204-57-64-0-1
- Created
- Feb 14, 2003
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 27, 1994
- Status
- assigned
Report abuse
Abuse contact
- abuse@
level3. com - Name
- L3 Abuse Contact
- Phone
- +1-877-453-8353
- Handle
- LAC56-ARIN