Data as of Nov 3, 2026
72.5.10.0/23
No anonymizer space · no proxy exits in 30 daysCisco Systems Ironport Division · space held by PF IPV4 Borrower, LLC
IPv4 market
Path
2 · Leased from
4 · Use
Business
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
72.5.10.0/23
From the registry to its use
- Sep 30, 2004Registry recordPF IPV4 Borrower, LLCDirect Allocation72.5.0.0/20
- May 9, 2005– today
- Jul 18, 2005Route objectAS16417 Cisco Systems Ironport DivisionRADB route object for AS16417 Cisco Systems Ironport Division, maintainer MAINT-AS1828
- Aug 15, 2005– today
- todayLeased fromIPv4.GlobalIP broker
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Leased from | Holder | RPKI |
|---|---|---|---|---|---|
| 72.5.0.0/20 since May 2005 | AS14743 | Unknown | IP broker IPv4.Global | PF IPV4 Borrower, LLC |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 72.5.0.0/20 | 4,096 | PHIL-4-HOLDING | PF IPV4 Borrower, LLC (PIHL-4) · US | Direct Allocation | Sep 30, 2004 | [email protected] |
| └ 72.5.10.0/23 | 512 | INAP-SFO-GSPEED-72-5-10-0 | unknown | Reassigned | Jun 29, 2018 | [email protected] via PHIL-4-HOLDING |
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
- PF IPV4 Borrower, LLC
- Handle
- PIHL-4
- Range
- 72.5.0.0/20
- Registration type
- Direct Allocation
- Record created
- Sep 30, 2004
Origin network
AS16417
US
- Name
- Cisco Systems Ironport Division
- Type
- Business
- Registered
- Jun 22, 2005
- Domain
- cisco.com
- Website
- www.cisco.com
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Aug 2005
- Current origin since
- Aug 2005 · 21 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS16417 | RADB | PNAP-SFO gspeed route | MAINT-AS1828 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 72.5.10.0/23
- Netname
- INAP-SFO-GSPEED-72-5-10-0
- Registrant
- PF IPV4 Borrower, LLC
- Organization
- PF IPV4 Borrower, LLC (PIHL-4)
- Org address
- 1209 Orange Street, Wilmington, DE, 19801
- Org country
- US
- Type
- Reassigned
- Handle
- NET-72-5-10-0-1
- Parent
- NET-72-5-0-0-1
- Created
- Jun 29, 2018
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 30, 2004
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- IP Admin
- Phone
- +1-212-610-5663
- Handle
- IPADM814-ARIN