# 31.151.38.142 — IP Intelligence Summary

31.151.38.142 is an IPv4 address operated by TNF-AS - Vodafone Libertel B.V., NL (AS33915), with approximate network location Amsterdam, Netherlands. It belongs to a mobile network with reverse DNS name 31-151-38-142.dynamic.upc.nl. As of November 13, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/31.151.38.142
- Last updated: 2026-11-13

## Ownership

- Organization: VODAFONEZIGGO IP AUTHORITY
- Network name: ZIGGO-B2C
- Allocated block: 31.151.0.0/18
- ASN: AS33915 (https://ipdebrief.com/asn/33915)
- Regional registry: RIPE
- Registered holder: VODAFONEZIGGO IP AUTHORITY
- Routing operator: TNF-AS - Vodafone Libertel B.V., NL
- Network registration country: NL
- Registrant address country: —

## Location

- City: Amsterdam
- Region: North Holland
- Country: Netherlands
- Time zone: Europe/Amsterdam

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

## Network classification

- Infrastructure type: MobileCarrier
- Datacenter / hosting: no
- Residential: no
- 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

- 31-151-38-142.dynamic.upc.nl
- Forward-confirmed: yes

## DNS posture

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

- caa: Present / verified (upc.nl)
- spf: Unknown / lookup inconclusive (31-151-38-142.dynamic.upc.nl)
- dmarc: Unknown / lookup inconclusive (_dmarc.31-151-38-142.dynamic.upc.nl)
- dnssec: Unknown / lookup inconclusive (142.38.151.31.in-addr.arpa)
- fcrDns: Unknown / lookup inconclusive (31-151-38-142.dynamic.upc.nl)

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Source: IPDebrief, "31.151.38.142 IP intelligence", https://ipdebrief.com/31.151.38.142, updated 2026-11-13. Assessments are probabilistic.