IPDebrief

91.15.31.65

IP Intelligence Dossier
Your IP: 216.73.217.75

91.15.31.65 is an IPv4 address announced by AS3320, with approximate network location Fürth, Germany. It belongs to a mobile network with reverse DNS name p5b0f1f41.dip0.t-ipconnect.de. As of November 12, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.

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🌍 Geolocation

Country🇩🇪 Germany
Location scopeApproximate network location. Distributed and anycast services can vary by observation point.
Anycast classificationUnverified (not proof of unicast)
RegionBavaria
CityFürth
TimezoneEurope/Berlin
Latitude51.17
Longitude10.45

🏢 Ownership & Registration

Registered holderDTAG-NIC
ASNAS3320
Network NameDTAG-DIAL22
CIDR Block91.0.0.0/12
RIRRIPE
Network registration countryDE
Abuse ContactAvailable via RDAP

🌐 DNS Intelligence

PTRp5b0f1f41.dip0.t-ipconnect.de
Forward ConfirmedYes — FCrDNS verified
Forward Hostnamesp5b0f1f41.dip0.t-ipconnect.de

DNS Posture

Results describe the queried names. SPF, DMARC and CAA are domain policies, not requirements for every IP. DNSSEC here describes reverse DNS; inconclusive validation does not mean unsigned.

Not assessed: 0 conclusive IP DNS checks.

spfNot checked
dmarcNot checked
fcrDnsNot checked
dnssecNot checked
caaNot checked

☁️ Network Classification

InfrastructureMobile
Service PurposeWeb Server
Network TierTier 3 — Basic operator with some routing infrastructure
Mobile

🔌 Services & Open Ports

PortServiceProtocolBanner
80httptcp—
443httpstcp—
Closed Ports22, 25, 3389, 8080, 8443 (2 open / 7 scanned)
ServerWeb server detected
HTTP Title—

🔐 TLS Certificate

Historical certificate; current certificate unknown. This describes the last probe, not a live check. An IP-targeted handshake does not establish the certificate served for every hostname.
🔒
CN=synology.com, O=Synology Inc., L=Taipei, C=TW
Issued by CN=Synology Inc. CA, O=Synology Inc., L=Taipei, C=TW
Self-signed: No
SANsNone
Valid From2016-10-25T18:03:45+00:00
Valid Until2036-07-12T18:03:45+00:00

🛡️ Public Network Snapshot

Origin ASNAS3320
Network Prefix91.0.0.0/10
Route mappingFound
HSTSNot detected
CSPNot detected
HTTP/2Enabled

🎯 Confidence Breakdown

Per-dimension confidence scores based on source diversity and data freshness

DimensionScoreSourcesObservations
threat
25%
24
routing
8%
11
services
17%
23
ownership
17%
23
reputation
8%
12
geolocation
17%
23
Overall15%1016
Coverage: 4/6 dimensions · Data sufficiency: partial
Data CoherenceMixed Signals (68%) — 2 contradiction(s)
AttributionModerate (55%)
OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid
⚠ Geo sources disagree on country: TW, DE
⚠ TLS certificate claims TW but primary geo says DE

📅 Observation Timeline 🔄 Stale

First Seen2026-07-11 02:19:27 UTC
Last Seen2026-10-09 01:58:54 UTC
Profile Built2026-11-12 04:45:15 UTC
Data FreshnessStale
Signal Types23
Total Observations29
🔍 23 signal types · 29 observations collected
This report is generated from 23+ independent intelligence signals including ownership records, DNS analysis, BGP routing, TLS certificates, port scanning, threat feeds, behavioral fingerprinting, and more.
Full dossier details are available via our API.
{ } JSON API 📧 Enterprise Access

❓ Frequently Asked Questions About 91.15.31.65

Who owns the IP address 91.15.31.65?

91.15.31.65 is registered to DTAG-NIC. The address falls within the 91.0.0.0/12 network block. Registration is held at RIPE.

Where is 91.15.31.65 located?

Geolocation data places 91.15.31.65 in Fürth, Bavaria, Germany. The local time zone is Europe/Berlin. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.

Is 91.15.31.65 malicious or safe?

91.15.31.65 currently carries a low risk assessment, meaning no significant threat indicators have been observed. This assessment is generated from continuously collected signals and can change over time.

What is the hostname for 91.15.31.65?

The reverse DNS (PTR) record for 91.15.31.65 is p5b0f1f41.dip0.t-ipconnect.de. This hostname is forward-confirmed, meaning it resolves back to the same address.

What ports are open on 91.15.31.65?

Responsive ports observed on 91.15.31.65 include 80, 443. Port visibility reflects the most recent scan and may change as the host's configuration or firewall rules change.

Is 91.15.31.65 a VPN, proxy, or data center address?

91.15.31.65 is classified as a mobile network based on network ownership and behavioural analysis.

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ℹ️ About This Report

All data shown is publicly available network metadata — IP addresses do not reliably identify individuals. Assessments are probabilistic and should not be used as sole basis for access control decisions. To report an issue or request data review, contact admin@ipdebrief.com.