Data as of Nov 7, 2026
72.244.156.0/24
No anonymizer space · no proxy exits in 30 daysFlorida High Speed Internet · space held by GTT Americas, LLC
Announcement
this exact prefix
RPKI valid
Announced by
Type
Unknown
Risk
40 / 100 · Medium
Leased space · Recently moved
Recent change
New origin Sep 2026
from AS13347 Midwest Cable
IPv4 market
Path
Announced by AS36295 since Sep 2026 · 7 wk ago
1 · Holder
record created Mar 22, 2005 · reallocated to Internet Utilities NA LLC Jul 30, 2025
2 · Leased from
4 · Use
Unknown
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
72.244.156.0/24
From the registry to its use
- Mar 22, 2005Registry recordGTT Americas, LLCDirect Allocation72.244.0.0/15
- Sep 22, 2005– May 15, 2022
- Apr 29, 2023– today
- Jul 30, 2025ReallocatedInternet Utilities NA LLCReallocated72.244.0.0/16
- Oct 3, 2025– Sep 15, 2026
- Apr 1, 2026– Apr 12, 2026
- Jul 6, 2026– Jul 17, 2026
- Jul 14, 2026AssignedCook Technical InstituteReassigned72.244.156.0/24
- Sep 16, 2026– today
- Sep 17, 2026Route objectIPXOARIN route object for AS36295 Florida High Speed Internet, maintainer MNT-DCL-577
- Sep 18, 2026Route objectAS36295 Florida High Speed InternetRADB route object for AS36295 Florida High Speed Internet, maintainer MAINT-AS27626
- todayLeased fromIPXOIP broker
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Leased from | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|---|
| 72.244.0.0/15 since Apr 2023 | AS3257 | Internet provider | IP broker IPXO (part) | 426 64 always on | GTT Americas, 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 |
|---|---|---|---|---|---|---|
| 72.244.0.0/15 | 131,072 | MEGAPATH-BLK-63 | GTT Americas, LLC (GAL-104) · US | Direct Allocation | Mar 22, 2005 | abuse@ |
| └ 72.244.0.0/16 | 65,536 | IPXO-GTT | IPXO LLC (IL-845) · US | Reallocated | Jul 18, 2025 | abuse@ |
| └ 72.244.0.0/16 | 65,536 | NETUTILS | Internet Utilities NA LLC (DCL-577) · US | Reallocated | Jul 30, 2025 | report@ |
| └ 72.244.156.0/24 | 256 | COOK-TECHNICAL-INSTITUTE | Cook Technical Institute (C11648261) · US | Reassigned | Jul 14, 2026 | report@ via IPXO-GTT |
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
- GTT Americas, LLC
- Handle
- GAL-104
- Range
- 72.
244. 0. 0/ 15 - Registration type
- Direct Allocation
- Record created
- Mar 22, 2005
- Reallocated to
- Internet Utilities NA LLC (DCL-577)
- Reallocated range
- 72.
244. 0. 0/ 16 - Reallocated
- Jul 30, 2025
Origin network
AS36295
US
- Name
- Florida High Speed Internet
- Type
- Internet provider
- Registered
- Nov 17, 2005
- Domain
- flhsi.com
- Website
- www.flhsi.com
- 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
- Oct 2025
- Current origin since
- Sep 2026 · 2 mo
- Origin networks
- 4
- Last change of origin
- Sep 2026
Recorded history
History
- Handoffs
- 3
Whois
Registration for this announcement
- Range
- 72.
244. 156. 0/ 24 - Netname
- COOK-TECHNICAL-INSTITUTE
- Registrant
- Cook Technical Institute
- Organization
- Cook Technical Institute (C11648261)
- Type
- Reassigned
- Handle
- NET-72-244-156-0-1
- Parent
- NET-72-244-0-0-3
- Created
- Jul 14, 2026
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 22, 2005
- Status
- assigned
Report abuse
Abuse contact
- report@
abuseradar. com - Name
- Internet Utilities Abuse
- Phone
- +1-650-934-1667
- Handle
- IUA-ARIN