Data as of Nov 13, 2026
66.6.44.0/24
No anonymizer space · no proxy exits in 30 daysAutomattic, Inc
Announcement
this exact prefix
RPKI valid
Announced by
Type
Hosting
Risk
50 / 100 · Medium
Recent change
Reallocated May 28, 2026
to Tumblr, Inc. by Automattic, Inc
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 |
|---|---|---|---|---|---|---|
| 66.6.32.0/20 | 4,096 | AUTOMATTIC | Automattic, Inc (AUTOM-93) · US | Direct Allocation | Apr 25, 2011 | abuse@ |
| └ 66.6.44.0/24 | 256 | TUMBLR | Tumblr, Inc. (TUMBL-1) · US | Reallocated | May 28, 2026 | abuse@ |
Network & registry
Registry
Holder
- Organization
- Automattic, Inc
- Handle
- AUTOM-93
- Range
- 66.
6. 32. 0/ 20 - Registration type
- Direct Allocation
- Record created
- Apr 25, 2011
- Reallocated to
- Tumblr, Inc. (TUMBL-1)
- Reallocated range
- 66.
6. 44. 0/ 24 - Reallocated
- May 28, 2026
Origin network
AS2635
US
- Name
- Automattic, Inc
- Type
- Hosting
- Registered
- Oct 1, 2012
- Domain
- automattic.com
- Website
- automattic.com
- Industry
- Hosting and Cloud Provider
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Nov 2011
- Current origin since
- Feb 2020 · 6.8 yr
- Origin networks
- 3
- Last change of origin
- Feb 2020
Recorded history
History
- Handoffs
- 2
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 66.6.32.0/20 | AS2635 | /24 | ARIN | RPKI valid |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS2635 | RADB | TUMBLR | MAINT-AS2635 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 66.
6. 44. 0/ 24 - Netname
- TUMBLR
- Registrant
- Tumblr, Inc.
- Organization
- Tumblr, Inc. (TUMBL-1)
- Org address
- 35 East 21st St, New York, NY, 10010
- Org country
- US
- Type
- Reallocated
- Handle
- NET-66-6-44-0-1
- Parent
- NET-66-6-32-0-1
- Created
- May 28, 2026
- RIR
- ARIN
- Country
- US
- Delegated
- Apr 25, 2011
- Status
- assigned
Report abuse
Abuse contact
- abuse@
tumblr. com - Name
- TUMBLR ABUSE
- Phone
- +1-678-439-8862
- Handle
- TUMBL5-ARIN