Data as of Nov 5, 2026
173.211.72.0/23
No anonymizer space · no proxy exits in 30 daysAervivo, Inc · space held by Colocation America Corporation
Announcement
this exact prefix
RPKI valid
Announced by
Type
Unknown
Risk
40 / 100 · Medium
Leased space
IPv4 market
Path
1 · Holder
record created Oct 5, 2009 · reallocated to Internet Utilities NA LLC Jan 7, 2025
2 · Leased from
4 · Use
Unknown
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
173.211.72.0/23
From the registry to its use
- Oct 5, 2009Registry recordColocation America CorporationDirect Allocation173.211.0.0/17
- May 15, 2010– Apr 15, 2011
- Aug 1, 2011– today
- Feb 11, 2024– today
- Jan 7, 2025ReallocatedInternet Utilities NA LLCReallocated173.211.72.0/22
- todayLeased fromIPXOIP broker
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Leased from | Holder | RPKI |
|---|---|---|---|---|---|
| 173.211.0.0/17 since Aug 2011 | AS21769 | Hosting | IP broker IPXO (part) | Colocation America Corporation |
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 |
|---|---|---|---|---|---|---|
| 173.211.0.0/17 | 32,768 | CAC-BLOCK7 | Colocation America Corporation (CAC-89) · US | Direct Allocation | Oct 5, 2009 | Abuse@ |
| └ 173.211.72.0/22 | 1,024 | IPXO-LLC | IPXO LLC (IL-845) · US | Reallocated | Dec 8, 2023 | abuse@ |
| └ 173.211.72.0/22 | 1,024 | NETUTILS | Internet Utilities NA LLC (DCL-577) · US | Reallocated | Jan 7, 2025 | report@ |
| └ 173.211.72.0/22 | 1,024 | AERVIVO | Aervivo (C11060682) · US | Reassigned | Jan 7, 2025 | report@ via IPXO-LLC |
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
- Colocation America Corporation
- Handle
- CAC-89
- Range
- 173.
211. 0. 0/ 17 - Registration type
- Direct Allocation
- Record created
- Oct 5, 2009
- Reallocated to
- Internet Utilities NA LLC (DCL-577)
- Reallocated range
- 173.
211. 72. 0/ 22 - Reallocated
- Jan 7, 2025
Origin network
AS399672
US
- Name
- Aervivo, Inc
- Type
- Internet provider
- Registered
- May 13, 2021
- Domain
- aervivo.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
- Stable
- First seen
- Feb 2024
- Current origin since
- Feb 2024 · 2.7 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 173.211.72.0/22 | AS399672 | /24 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 173.
211. 72. 0/ 22 - Netname
- AERVIVO
- Registrant
- Aervivo
- Organization
- Aervivo (C11060682)
- Type
- Reassigned
- Handle
- NET-173-211-72-0-3
- Parent
- NET-173-211-72-0-2
- Created
- Jan 7, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 5, 2009
- Status
- assigned
Report abuse
Abuse contact
- report@
abuseradar. com - Name
- Internet Utilities Abuse
- Phone
- +1-650-934-1667
- Handle
- IUA-ARIN