Data as of Nov 5, 2026
5.172.37.0/24
No anonymizer space · no proxy exits in 30 daysTier.Net Technologies LLC · space held by Drustvo za telekomunikacije Orion telekom doo Beograd-Zemun
Announcement
this exact prefix
RPKI valid
Announced by
Type
Hosting
Risk
50 / 100 · Medium
Recently moved
Recent change
New origin Sep 28, 2026
from AS32693 NEXX
IPv4 market
Path
Announced by AS397423 since Sep 28, 2026 · 5 wk ago
1 · Holder
record created Jul 30, 2012 · reallocated to C4K5 LLC Feb 9, 2026
2 · Leased from
4 · Use
Hosting
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
5.172.37.0/24
From the registry to its use
- Jul 30, 2012Registry recordDrustvo za telekomunikacije Orion telekom doo Beograd-ZemunALLOCATED PA5.172.32.0/21
- Oct 15, 2025– Jan 30, 2026
- Feb 9, 2026ReallocatedC4K5 LLCSUB-ALLOCATED PA5.172.37.0/24
- Feb 24, 2026– Sep 15, 2026
- Sep 28, 2026– Nov 2, 2026
- todayLeased fromIPXOIP broker
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 |
|---|---|---|---|---|---|---|
| 5.172.32.0/21 | 2,048 | RS-ORIONTELEKOM-20120730 | Drustvo za telekomunikacije Orion telekom doo Beograd-Zemun (ORG-MW1-RIPE) · RS | ALLOCATED PA | Jul 30, 2012 | abuse@ |
| └ 5.172.37.0/24 | 256 | IPXO | C4K5 LLC (ORG-CL758-RIPE) · US | SUB-ALLOCATED PA | Feb 9, 2026 | report@ |
Network & registry
IPv4 market
Holder
- Organization
- Drustvo za telekomunikacije Orion telekom doo Beograd-Zemun
- Handle
- ORG-MW1-RIPE
- Range
- 5.
172. 32. 0/ 21 - Registration type
- ALLOCATED PA
- Record created
- Jul 30, 2012
- Reallocated to
- C4K5 LLC (ORG-CL758-RIPE)
- Reallocated range
- 5.
172. 37. 0/ 24 - Reallocation type
- SUB-ALLOCATED PA
- Reallocated
- Feb 9, 2026
Origin network
AS397423
US
- Name
- Tier.Net Technologies LLC
- Type
- Hosting
- Registered
- Mar 26, 2019
- Domain
- tier.net
- Website
- www.tier.net
- Spamhaus ASN-DROP
- not listed
- VPN servers
- 62
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Rotating
- First seen
- Oct 2025
- Current origin since
- Sep 28, 2026 · 1 mo
- Origin networks
- 3
- Last change of origin
- Sep 28, 2026
Recorded history
History
- Handoffs
- 2
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 5.172.37.0/24 | AS397423 | /24 | RIPE | RPKI valid |
Whois
Registration for this announcement
- Range
- 5.
172. 37. 0/ 24 - Netname
- IPXO
- Registrant
- Internet Utilities Europe and Asia Limited
- Registrant country
- EU
- Organization
- Internet Utilities Europe and Asia Limited (ORG-IL687-RIPE)
- Org country
- GB
- Type
- SUB-ALLOCATED PA
- Created
- Feb 9, 2026
- Updated
- Oct 29, 2026
- Maintainer
- netutils-mnt
- RIR
- RIPE NCC
- Country
- RS
- Delegated
- Jul 30, 2012
- Status
- assigned
Report abuse
Abuse contact
- report@
abuseradar. com - Name
- Internet Utilities Abuse Contact
- Handle
- AR834