Data as of Nov 7, 2026
216.4.233.0/24
No anonymizer space · no proxy exits in 30 daysAvantguard Monitoring Centers · space held by Verizon Business
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 216.4.0.0/15 since May 2005 | AS2828 | Internet provider | 7 | Verizon Business |
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 |
|---|---|---|---|---|---|---|
| 216. | 393,216 | ALGX-ABI-BLK15 | Verizon Business (MCICS) · US | Direct Allocation | Jan 2, 2001 | abuse@ |
| └ 216.4.233.0/24 | 256 | NET-216-4-233-0-1 | Avantguard Monitoring Centers (C10477932) · US | Reassigned | Nov 29, 2023 | abuse@ via ALGX-ABI-BLK15 |
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
- Verizon Business
- Handle
- MCICS
- Range
- 216.
0. 0. 0 - 216. 5. 255. 255 - Registration type
- Direct Allocation
- Record created
- Jan 2, 2001
Origin network
AS393630
US
- Name
- Avantguard Monitoring Centers
- Type
- Business
- Registered
- Sep 17, 2014
- Domain
- agmonitoring.com
- Industry
- Software Development
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Dec 2023
- Current origin since
- Aug 2024 · 2.2 yr
- Origin networks
- 2
- Last change of origin
- Aug 2024
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 216.4.233.0/24 | AS393630 | /24 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 216.
4. 233. 0/ 24 - Netname
- NET-216-4-233-0-1
- Registrant
- Avantguard Monitoring Centers
- Organization
- Avantguard Monitoring Centers (C10477932)
- Type
- Reassigned
- Handle
- NET-216-4-233-0-1
- Parent
- NET-216-0-0-0-1
- Created
- Nov 29, 2023
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 2, 2001
- Status
- assigned
Report abuse
Abuse contact
- abuse@
verizon. com - Name
- Abuse
- Phone
- +1-800-900-0241
- Handle
- ABUSE5603-ARIN