Data as of Nov 13, 2026
137.44.124.0/23
No anonymizer space · no proxy exits in 30 daysGTT Communications Inc. · space held by Rosenberger Hochfrequenztechnik GmbH trading as Rosenberger Hochfrequenztechnik GmbH & Co. KG
Announcement
this exact prefix
RPKI valid
Announced by
Type
Business
Risk
0 / 100 · Low
Recent change
New origin May 2026
its first announcement on record
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 |
|---|---|---|---|---|---|---|
| 137.44.120.0/21 | 2,048 | NET-19891025 | Rosenberger Hochfrequenztechnik GmbH trading as Rosenberger Hochfrequenztechnik GmbH & Co. KG (ORG-RHGT1-RIPE) · DE | LEGACY | May 15, 2026 | abuse-ip@ |
| └ 137.44.124.0/27 | 32 | rb-de-laf2-IPv4NET1 | Rosenberger Kunststofftechnik GmbH & Co. KG | LEGACY | May 21, 2026 | abuse-ip@ via NET-19891025 |
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
Origin network
AS3257
US
- Name
- GTT Communications Inc.
- Type
- Internet provider
- Registered
- Sep 30, 1994
- Domain
- gtt.net
- Website
- www.gtt.net
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
- VPN servers
- 243
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2026
- Current origin since
- May 2026 · 6 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 137.44.124.0/23 | AS3257 | /23 | RIPE | RPKI valid |
| 137.44.120.0/21 | AS200032 | /24 | RIPE | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS3257 | RIPE | LIR-DE-ROSENBERGER-HFT-1-MNT | May 21, 2026 |
Whois
Registration for this announcement
- Range
- 137.
44. 120. 0/ 21 - Netname
- NET-19891025
- Registrant
- Rosenberger Hochfrequenztechnik GmbH trading as Rosenberger Hochfrequenztechnik GmbH & Co. KG
- Registrant country
- DE
- Organization
- Rosenberger Hochfrequenztechnik GmbH trading as Rosenberger Hochfrequenztechnik GmbH & Co. KG (ORG-RHGT1-RIPE)
- Org country
- DE
- Type
- LEGACY
- Created
- May 15, 2026
- Updated
- May 15, 2026
- Maintainer
- RIPE-NCC-LEGACY-MNT
- RIR
- RIPE NCC
- Country
- DE
- Delegated
- Oct 25, 1989
- Status
- assigned
Report abuse
Abuse contact
- abuse-ip@
rosenberger. com - Name
- Abuse-C Role
- Handle
- AR79761-RIPE