Data as of Nov 4, 2026
209.133.71.0/24
No anonymizer space · no proxy exits in 30 daysZillow, Inc. · space held by Zayo Bandwidth
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 209.133.0.0/17 since May 2005 | AS6461 | Internet provider | 84 5 always on | Zayo Bandwidth |
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 |
|---|---|---|---|---|---|---|
| 209.133.0.0/17 | 32,768 | NETBLK-ABOVENET-3 | Zayo Bandwidth (ZAYOB) · US | Direct Allocation | Sep 19, 1997 | [email protected] |
| └ 209.133.71.0/24 | 256 | ZAYO-IPYX-104388-209-133-71-0-24 | Zillow, Inc. (ZILLO) · US | Reassigned | Mar 10, 2015 | — |
Network & registry
Registry
Holder
- Organization
- Zayo Bandwidth
- Handle
- ZAYOB
- Range
- 209.133.0.0/17
- Registration type
- Direct Allocation
- Record created
- Sep 19, 1997
- Legacy
- yes
Origin network
AS18888
US
- Name
- Zillow, Inc.
- Type
- Business
- Registered
- Nov 17, 2006
- Domain
- zillow.com
- Website
- zillowgroup.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
- Aug 2016 · 10 yr
- Origin networks
- 2
- Last change of origin
- Jan 2011
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 209.133.71.0/24 | AS18888 | /24 | ARIN | RPKI valid |
| 209.133.0.0/17 | AS6461 | /17 | ARIN | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS18888 | ARIN | zillow.com IRV | MNT-ZILLO | Apr 17, 2018 |
Whois
Registration for this announcement
- Range
- 209.133.71.0/24
- Netname
- ZAYO-IPYX-104388-209-133-71-0-24
- Registrant
- Zillow, Inc.
- Organization
- Zillow, Inc. (ZILLO)
- Org address
- 1301 Second Avenue, Floor 31, Seattle, WA, 98101
- Org country
- US
- Type
- Reassigned
- Handle
- NET-209-133-71-0-1
- Parent
- NET-209-133-0-0-1
- Created
- Mar 10, 2015
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 19, 1997
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- Boley, Alexander Alexander
- Phone
- +1-312-766-9197
- Handle
- AAB43-ARIN