Data as of Nov 13, 2026
209.216.4.0/22
Anonymizer · Datacenter proxyUltra One · space held by Xantho UAB
Announcement
this exact prefix
RPKI valid
Announced by
Type
Datacenter proxy
Risk
85 / 100 · Critical
Recent change
New origin Oct 22, 2026
its first announcement on record
IPv4 market
Path
Announced by AS399989 since Oct 22, 2026 · 3 wk ago
Operators, sellers and brokers
Proxy providers
| Name | Parent | In 209.216.4.0/22 | /24s |
|---|---|---|---|
| Ultra One | 1,024100% | 4 |
Leased from
Owners leasing their own space
| Name | In 209.216.4.0/22 | /24s |
|---|---|---|
| Xantho UAB | 1,024100% | 4 |
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
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 |
|---|---|---|---|---|---|---|
| 209.216.0.0/19 | 8,192 | LT-UABXANTHO37-19980320 | Xantho UAB (ORG-XU5-RIPE) · LT | ALLOCATED PA | Oct 21, 2026 | abuse@ |
| └ 209.216.4.0/22 | 1,024 | Private | unknown | ASSIGNED PA | Oct 23, 2026 | abuse@ via LT-UABXANTHO37-19980320 |
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
- Xantho UAB
- Handle
- ORG-XU5-RIPE
- Range
- 209.
216. 0. 0/ 19 - Registration type
- ALLOCATED PA
- Record created
- Oct 21, 2026
Origin network
AS399989
US
- Name
- Ultra One
- Type
- Hosting
- Registered
- Aug 25, 2021
- Domain
- ultra.one
- Industry
- Hosting, Cloud Provider, Data Center, Server Colocation
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Oct 22, 2026
- Current origin since
- Oct 22, 2026 · under a month
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 209.
216. 4. 0/ 22 - Netname
- Private
- Registrant country
- LT
- Organization
- Not stated by the registry
- Type
- ASSIGNED PA
- Created
- Oct 23, 2026
- Updated
- Oct 23, 2026
- Maintainer
- xantho-mnt
- RIR
- RIPE NCC
- Country
- LT
- Delegated
- Mar 20, 1998
- Status
- assigned
Report abuse
Abuse contact
- abuse@
xantho. lt - Name
- Abuse-C Role
- Handle
- XANT1