# 77.0.237.138 — IP Intelligence Summary

77.0.237.138 is an IPv4 address announced by AS6805, with approximate network location Hamburg, Germany. It belongs to a mobile network with reverse DNS name dynamic-077-000-237-138.77.0.pool.telefonica.de. As of November 11, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/77.0.237.138
- Last updated: 2026-11-11

## Ownership

- Organization: IP Telefonica O2 Germany
- Network name: TEDE-ZISP
- Allocated block: 77.0.0.0/16
- ASN: AS6805 (https://ipdebrief.com/asn/6805)
- Regional registry: RIPE
- Registered holder: IP Telefonica O2 Germany
- Routing operator: —
- Network registration country: DE
- Registrant address country: —

## Location

- City: Hamburg
- Region: Free and Hanseatic City of Hamburg
- Country: Germany
- Time zone: Europe/Berlin

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

- dynamic-077-000-237-138.77.0.pool.telefonica.de
- 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, "77.0.237.138 IP intelligence", https://ipdebrief.com/77.0.237.138, updated 2026-11-11. Assessments are probabilistic.