Data as of Nov 4, 2026
63.251.56.160/27
No anonymizer space · no proxy exits in 30 daysSymbioSystems LLC · space held by PF IPV4 Borrower, LLC
IPv4 market
Path
2 · Leased from
4 · Use
Business
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Leased from | Holder | RPKI |
|---|---|---|---|---|---|
| 63.251.48.0/20 since May 2005 | AS14743 | Unknown | IP broker IPv4.Global | PF IPV4 Borrower, LLC |
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 63.251.16.0 - 63.251.85.255 | 17,920 | UG-210 | PF IPV4 Borrower, LLC (PIHL-4) · US | Direct Allocation | Dec 2, 1999 | [email protected] |
| └ 63.251.56.160/27 | 32 | INAP-SFO-PASSPORTCAP-22562 | unknown | — | — | — |
Network & registry
Announced by
Covering announcement 63.251.56.0/24
- Prefix
- 63.251.56.0/24
- Announced by
- AS25985 SymbioSystems LLC
- Type
- Business
- Leased from
- IP broker IPv4.Global
- RPKI
- No RPKI
- Netname
- UG-210
- Registrant
- PF IPV4 Borrower, LLC
- RIR
- ARIN
Origin network
AS25985
US
- Name
- SymbioSystems LLC
- Type
- Business
- Registered
- Feb 1, 2013
- Domain
- symbiosystems.com
- Industry
- Service
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
63.251.56.0/24
Routing history
- Pattern
- Stable
- First seen
- Apr 2017
- Current origin since
- May 2018 · 8.5 yr
- Origin networks
- 2
- Last change of origin
- May 2018
Recorded history
History
- Handoffs
- 1
IRR
Route objects on 63.251.56.0/24
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS25985 | ALTDB | Proxy registration to prevent harm from ARIN-NONAUTH shutdown | MAINT-AS7034 | Apr 4, 2022 |
Whois
Registration for this announcement
- Range
- 63.251.16.0 - 63.251.85.255
- Netname
- UG-210
- Registrant
- PF IPV4 Borrower, LLC
- Organization
- PF IPV4 Borrower, LLC (PIHL-4)
- Org address
- 1209 Orange Street, Wilmington, DE, 19801
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-63-251-16-0-1
- Parent
- NET-63-0-0-0-0
- Created
- Dec 2, 1999
- RIR
- ARIN
- Country
- US
- Delegated
- Dec 2, 1999
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- IP Admin
- Phone
- +1-212-610-5663
- Handle
- IPADM814-ARIN