Data as of Nov 3, 2026
166.32.0.0/12
No anonymizer spaceVerizon Business
Announcements
Nesting
More-specifics by size
Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 166.32.0.0/20 since Apr 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.32.16.0/20 since Nov 2016 | AS3372 | Internet provider | Verizon Business | |
| 166.32.48.0/20 since Jun 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.32.56.0/24 since Oct 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.32.128.0/19 since Jun 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.32.160.0/20 since Oct 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.32.240.0/20 since Feb 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.33.0.0/19 since Feb 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.33.11.0/24 since Apr 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.33.32.0/20 since Jun 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.33.48.0/21 since Oct 2013 | AS3372 | Internet provider | Verizon Business | |
| 166.33.52.0/22 since Nov 2019 | AS3372 | Internet provider | Verizon Business | |
| 166.33.56.0/21 since Feb 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.33.64.0/19 since Mar 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.33.96.0/19 since Jun 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.33.160.0/20 since Feb 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.33.176.0/20 since Apr 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.33.192.0/20 since Oct 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.34.64.0/18 since Jun 2011 | AS3378 | Internet provider | Verizon Business | |
| 166.34.128.0/17 since Oct 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.35.128.0/17 since Jun 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.36.0.0/20 since Aug 2013 | AS3372 | Internet provider | Verizon Business | |
| 166.36.16.0/21 since Mar 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.36.24.0/21 since Dec 2016 | AS3372 | Internet provider | Verizon Business | |
| 166.36.80.0/21 since Jun 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.36.88.0/21 since Mar 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.37.0.0/18 since Oct 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.37.96.0/19 since Mar 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.37.194.0/23 since Oct 2011 | AS3375 | Internet provider | Verizon Business | |
| 166.37.200.0/21 since Oct 2011 | AS3375 | Internet provider | Verizon Business | |
| 166.37.208.0/20 since Oct 2011 | AS3375 | Internet provider | Verizon Business | |
| 166.37.218.0/23 since Dec 2024 | AS3375 | Internet provider | Verizon Business | |
| 166.37.232.0/21 since Sep 2011 | AS3375 | Internet provider | Verizon Business | |
| 166.37.240.0/20 since Apr 2014 | AS3375 | Internet provider | Verizon Business | |
| 166.38.34.0/24 since May 2021 | AS3372 | Internet provider | Verizon Business | |
| 166.38.38.0/24 since Jun 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.38.52.0/24 since Dec 2016 | AS3372 | Internet provider | Verizon Business | |
| 166.38.53.0/24 since Dec 2016 | AS3372 | Internet provider | Verizon Business | |
| 166.38.76.0/22 since Apr 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.38.96.0/19 since Jun 2011 | AS3378 | Internet provider | Verizon Business | |
| 166.38.132.0/23 since Jun 2011 | AS3378 | Internet provider | Verizon Business | |
| 166.38.136.0/23 since Jun 2011 | AS3378 | Internet provider | Verizon Business | |
| 166.38.160.0/21 since Feb 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.38.163.0/24 since Apr 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.38.168.0/21 since Sep 2016 | AS3372 | Internet provider | Verizon Business | |
| 166.38.176.0/24 since Nov 2019 | AS3372 | Internet provider | Verizon Business | |
| 166.38.178.0/24 since Nov 2019 | AS3372 | Internet provider | Verizon Business | |
| 166.38.179.0/24 since Nov 2019 | AS3372 | Internet provider | Verizon Business | |
| 166.38.180.0/24 since Mar 2016 | AS3372 | Internet provider | Verizon Business | |
| 166.38.181.0/24 since Mar 2016 | AS3372 | Internet provider | Verizon Business | |
| 166.38.182.0/24 since Mar 2016 | AS3372 | Internet provider | Verizon Business | |
| 166.38.183.0/24 since Mar 2016 | AS3372 | Internet provider | Verizon Business | |
| 166.38.188.0/24 since May 2016 | AS3372 | Internet provider | Verizon Business | |
| 166.38.189.0/24 since May 2016 | AS3372 | Internet provider | Verizon Business | |
| 166.38.190.0/24 since May 2016 | AS3372 | Internet provider | Verizon Business | |
| 166.38.191.0/24 since May 2016 | AS3372 | Internet provider | Verizon Business | |
| 166.38.192.0/19 since Oct 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.38.192.0/20 since Oct 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.38.208.0/20 since Oct 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.38.224.0/20 since Apr 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.39.0.0/20 since Oct 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.39.64.0/20 since Mar 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.39.80.0/20 since Apr 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.39.116.0/22 since Jun 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.39.120.0/21 since Jun 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.39.128.0/20 since Feb 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.39.144.0/21 since Feb 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.39.152.0/21 since Feb 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.39.208.0/20 since Apr 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.40.112.0/20 since Oct 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.40.161.0/24 since Apr 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.40.162.0/24 since Apr 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.40.163.0/24 since Feb 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.40.164.0/23 since Feb 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.40.166.0/23 since Sep 2018 | AS3372 | Internet provider | Verizon Business | |
| 166.40.169.0/24 since Apr 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.40.172.0/23 since May 2019 | AS3372 | Internet provider | Verizon Business | |
| 166.40.216.0/21 since Apr 2019 | AS3372 | Internet provider | Verizon Business | |
| 166.41.16.0/20 since Oct 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.41.32.0/19 since Oct 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.41.144.0/20 since Jun 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.41.160.0/20 since Jun 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.41.168.0/22 since May 2016 | AS3372 | Internet provider | Verizon Business | |
| 166.41.176.0/20 since Jun 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.41.192.0/20 since May 2012 | AS3372 | Internet provider | Verizon Business | |
| 166.43.0.0/16 since Sep 2021 | AS3371 | Internet provider | Verizon Business | |
| 166.43.144.0/20 since Nov 2021 | AS3372 | Internet provider | Verizon Business | |
| 166.43.160.0/20 since Sep 2021 | AS3372 | Internet provider | Verizon Business | |
| 166.43.176.0/20 since Sep 2021 | AS3372 | Internet provider | Verizon Business | |
| 166.44.240.0/24 since Mar 2018 | AS3377 | Internet provider | Verizon Business | |
| 166.44.241.0/24 since May 2005 | AS3377 | Internet provider | Verizon Business | |
| 166.44.248.0/22 since Mar 2018 | AS3371 | Internet provider | Verizon Business | |
| 166.46.112.0/20 since Mar 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.46.160.0/20 since Mar 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.46.176.0/20 since Jun 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.46.192.0/20 since Apr 2011 | AS3372 | Internet provider | Verizon Business | |
| 166.46.224.0/20 since Jun 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.47.8.0/24 | AS701 | Internet provider | Verizon Business | |
| 166.47.144.0/20 since Jun 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.47.160.0/20 since Jun 2010 | AS3372 | Internet provider | Verizon Business | |
| 166.47.240.0/20 since Apr 2011 | AS3372 | Internet provider | Verizon Business |
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 |
|---|---|---|---|---|---|---|
| 166.32.0.0 - 166.40.255.255 | 589,824 | MCI-NETCS3 | Verizon Business (MCICS) · US | Direct Allocation | Dec 9, 1996 | [email protected] |
| 166.41.0.0/16 | 65,536 | MCI-NETCS12 | Verizon Business (MCICS) · US | Direct Allocation | Mar 24, 1993 | [email protected] |
| 166.42.0.0 - 166.44.255.255 | 196,608 | MCI-NETCS13 | Verizon Business (MCICS) · US | Direct Allocation | Mar 24, 1993 | [email protected] |
| 166.45.0.0/16 | 65,536 | MCI-NETCS16 | Verizon Business (MCICS) · US | Direct Allocation | Mar 24, 1993 | [email protected] |
| 166.46.0.0/15 | 131,072 | MCI-NETCS17 | Verizon Business (MCICS) · US | Direct Allocation | Mar 24, 1993 | [email protected] |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
1,048,576 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Internet provider | 1,047,040 | >99% | 173 | |
| Residential | 1,536 | 0.15% | 6 |
Network & registry
IPv4 market
Holder
- Organization
- Not stated by the registry
Origin network
AS3371
US
- Name
- Verizon Business
- Type
- Internet provider
- Registered
- Jan 6, 1994
- Domain
- verizonbusiness.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- Nov 2011 · 15 yr
- Origin networks
- 2
- Last change of origin
- Nov 2011
Recorded history
History
- Handoffs
- 1
Whois
Registration for this announcement
166.32.0.0/12 spans several registrations: 5 records are listed under Registrations.
- RIR
- ARIN
- Country
- US
- Delegated
- Dec 9, 1996
- Status
- assigned