# 178.166.4.101 — IP Intelligence Summary

178.166.4.101 is an IPv4 address operated by VODAFONE-PT - Vodafone Portugal - Communicacoes Pessoais S.A., PT (AS12353), with approximate network location Porto, Portugal. Its reverse DNS name is 101.4.166.178.rev.vodafone.pt. As of November 13, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/178.166.4.101
- Last updated: 2026-11-13

## Ownership

- Organization: AS12353-MNT
- Network name: PT-VDF-168
- Allocated block: 178.166.0.0/19
- ASN: AS12353 (https://ipdebrief.com/asn/12353)
- Regional registry: RIPE
- Registered holder: AS12353-MNT
- Routing operator: VODAFONE-PT - Vodafone Portugal - Communicacoes Pessoais S.A., PT
- Network registration country: PT
- Registrant address country: —

## Location

- City: Porto
- Region: Porto
- Country: Portugal
- Time zone: Europe/Lisbon

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

## Network classification

- Infrastructure type: —
- Datacenter / hosting: no
- Residential: no
- Mobile: no
- 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

- 101.4.166.178.rev.vodafone.pt
- Forward-confirmed: yes

## DNS posture

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

- caa: Not found at queried name (pt)
- spf: Unknown / lookup inconclusive (101.4.166.178.rev.vodafone.pt)
- dmarc: Unknown / lookup inconclusive (_dmarc.101.4.166.178.rev.vodafone.pt)
- dnssec: Unknown / lookup inconclusive (101.4.166.178.in-addr.arpa)
- fcrDns: Unknown / lookup inconclusive (101.4.166.178.rev.vodafone.pt)

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Source: IPDebrief, "178.166.4.101 IP intelligence", https://ipdebrief.com/178.166.4.101, updated 2026-11-13. Assessments are probabilistic.