# 75.221.121.66 — IP Intelligence Summary

75.221.121.66 is an IPv4 address announced by AS6167, with approximate network location Oakland, United States. It belongs to a mobile network with reverse DNS name 66.sub-75-221-121.myvzw.com. As of October 6, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/75.221.121.66
- Last updated: 2026-10-06

## Ownership

- Organization: Verizon Business
- Network name: WIRELESSDATANEWORK
- Allocated block: 75.192.0.0/10
- ASN: AS6167 (https://ipdebrief.com/asn/6167)
- Regional registry: ARIN
- Registered holder: Verizon Business
- Routing operator: —
- Network registration country: United States
- Registrant address country: —

## Location

- City: Oakland
- Region: CA
- Country: United States
- Time zone: America/Los_Angeles

Approximate network location; registration and certificate addresses are not server-location evidence.

## Network classification

- Infrastructure type: Residential
- Datacenter / hosting: no
- Residential: yes
- Mobile: yes
- Anycast: Unverified (not proof of unicast)
- Tor exit node: no
- VPN: no
- Proxy: no

## Risk assessment

- Assessment: Low Risk (0/100)
- Blocklist listings: 0
- Suspicious activity indicators: no
- Spam source: no

## Reverse DNS

- 66.sub-75-221-121.myvzw.com
- Forward-confirmed: yes

## DNS posture

Mail authentication and CAA are optional domain policies, not IP-wide requirements.

- spf: Not checked
- dmarc: Not checked
- fcrDns: Not checked
- dnssec: Not checked
- caa: Not checked

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Source: IPDebrief, "75.221.121.66 IP intelligence", https://ipdebrief.com/75.221.121.66, updated 2026-10-06. Assessments are probabilistic.