Data as of Nov 6, 2026
204.12.144.0/24
No anonymizer space · no proxy exits in 30 daysShaw Communications
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 204.12.144.0/22 since Sep 2026 | AS6327 | Residential | Shaw Communications | ||
| 204.12.144.0/20 since Sep 2021 | AS6327 | Residential | 13 | Shaw Communications |
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 |
|---|---|---|---|---|---|---|
| 204.12.144.0/20 | 4,096 | SHAWENV-BLOCK4 | Shaw Communications (RCC-291) · CA | Direct Allocation | Jun 8, 2009 | internet. |
| └ 204.12.144.0/24 | 256 | ENV-CAL-204-12-144-0 | Calfrac Well Services Ltd. (CALFR) · CA | Reassigned | Oct 28, 2009 | — |
Network & registry
IPv4 market
Holder
- Organization
- Shaw Communications
- Handle
- RCC-291
- Range
- 204.
12. 144. 0/ 20 - Registration type
- Direct Allocation
- Record created
- Jun 8, 2009
Origin network
AS6327
CA
- Name
- Shaw Communications
- Type
- Internet provider
- Registered
- Mar 8, 1996
- Domain
- shaw.ca
- Website
- www.shaw.ca
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Nov 2009
- Current origin since
- May 2022 · 4.5 yr
- Origin networks
- 3
- Last change of origin
- May 2022
Recorded history
History
- Handoffs
- 2
Whois
Registration for this announcement
- Range
- 204.
12. 144. 0/ 24 - Netname
- ENV-CAL-204-12-144-0
- Registrant
- Calfrac Well Services Ltd.
- Organization
- Calfrac Well Services Ltd. (CALFR)
- Org address
- 411 - 8th Avenue SW, Calgary, AB, T2P-1E3
- Org country
- CA
- Type
- Reassigned
- Handle
- NET-204-12-144-0-2
- Parent
- NET-204-12-144-0-1
- Created
- Oct 28, 2009
- RIR
- ARIN
- Country
- CA
- Delegated
- Jun 8, 2009
- Status
- assigned
Report abuse
Abuse contact
- internet.
abuse@ sjrb. ca - Name
- ARINAbuse
- Phone
- +1-416-935-5555
- Handle
- ARINA397-ARIN