Data as of Nov 3, 2026
74.124.0.0/19
No anonymizer space · no proxy exits in 30 dayszColo
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 74.124.18.0/23 since Jul 2021 | AS26405 | Unknown | zColo | |
| 74.124.26.0/24 since Dec 2015 | AS26405 | Unknown | zColo | |
| 74.124.27.0/24 since Jul 2021 | AS26405 | Unknown | zColo |
Network & registry
Origin network
AS13354
US
- Name
- zColo
- Type
- Hosting
- Registered
- Mar 8, 2007
- Domain
- zcolo.com
- Website
- www.zayo.com/services/data-center-colocation/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Mar 2009
- Current origin since
- Mar 2009 · 18 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS13354 | RADB | CoreXchange | MAINT-AS13354 | Nov 13, 2023 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 74.124.0.0/20 | AS16526 | RADB | Proxy fbo Birch Telecom, Inc (AS16526) | MAINT-AS7029 | Nov 13, 2023 |
| 74.124.1.0/24 | AS32834 | RADB | Children's Medical - Fort Worth, Tx | MAINT-CHTR-WD | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 74.124.0.0/19
- Netname
- ZC38-BLOCK12
- Registrant
- zColo
- Organization
- zColo (ZGL-6)
- Org address
- 1805 29th St Suite 2050, Boulder, CO, 80301
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-74-124-0-0-1
- Parent
- NET-74-0-0-0-0
- Created
- Mar 6, 2009
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 6, 2009
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- ZCOLO
- Phone
- +1-571-450-1165
- Handle
- ZCOLO-ARIN