Data as of Nov 4, 2026
209.63.42.0/24
No anonymizer space · no proxy exits in 30 daysMainstream Data, Inc. · space held by Allstream Business US, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 209.63.0.0/16 since Jun 2007 | AS7385 | Business | 1 1 always on | Allstream Business US, 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 |
|---|---|---|---|---|---|---|
| 209.63.0.0/16 | 65,536 | NETBLK-ELI-NETBLK7 | Allstream Business US, LLC (ABUL-14) · US | Direct Allocation | Apr 1, 1997 | [email protected] |
| └ 209.63.42.0/24 | 256 | ELI-916-20963420 | Cidera Mainstream (CIDER) · US | Reallocated | Oct 25, 2002 | [email protected] |
| └ 209.63.42.0/24 | 256 | ITCM-209-63-42-0-24 | Mainstream Data, Inc. (MAINS-14) · US | Reassigned | Dec 9, 2010 | [email protected] |
Network & registry
Registry
Holder
- Organization
- Allstream Business US, LLC
- Handle
- ABUL-14
- Range
- 209.63.0.0/16
- Registration type
- Direct Allocation
- Record created
- Apr 1, 1997
- Legacy
- yes
- Reallocated to
- Cidera Mainstream (CIDER)
- Reallocated range
- 209.63.42.0/24
- Reallocated
- Oct 25, 2002
Origin network
AS19717
US
- Name
- Mainstream Data, Inc.
- Type
- Business
- Registered
- Feb 7, 2001
- Domain
- mainstreamdata.com
- Industry
- Software Development
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 21 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 209.63.42.0/24 | AS19717 | /24 | ARIN | RPKI valid |
| 209.63.0.0/16 | AS7385 | /24 | ARIN | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS19717 | ARIN | Allstream Business US, LLC | MNT-ABUL-14 | Jul 28, 2026 |
Whois
Registration for this announcement
- Range
- 209.63.42.0/24
- Netname
- ITCM-209-63-42-0-24
- Registrant
- Mainstream Data, Inc.
- Organization
- Mainstream Data, Inc. (MAINS-14)
- Org address
- 375 Chipeta Way, Salt Lake City, UT, 84108
- Org country
- US
- Type
- Reassigned
- Handle
- NET-209-63-42-0-2
- Parent
- NET-209-63-42-0-1
- Created
- Dec 9, 2010
- RIR
- ARIN
- Country
- US
- Delegated
- Apr 1, 1997
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- Bertsch, Scott
- Phone
- +1-801-584-2800
- Handle
- SB1393-ARIN