84.91.137.223 is an IPv4 address announced by AS13156, with approximate network location São Domingos de Rana, Portugal. Its reverse DNS name is pa4-84-91-137-223.netvisao.pt. As of November 12, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Registered holder | AS13156-MNT |
| ASN | AS13156 |
| Network Name | NOWO |
| CIDR Block | 84.91.136.0/22 |
| RIR | RIPE |
| Network registration country | PT |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | pa4-84-91-137-223.netvisao.pt |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | pa4-84-91-137-223.netvisao.pt |
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.
| spf | Not checked |
| dmarc | Not checked |
| fcrDns | Not checked |
| dnssec | Not checked |
| caa | Not checked |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Firewalled / No Services |
| Network Tier | Unknown — Insufficient routing data to classify |
No specific classification
🔍 14 signal types · 14 observations collected
This report is generated from 14+ 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.
❓ Frequently Asked Questions About 84.91.137.223
Who owns the IP address 84.91.137.223?
84.91.137.223 is registered to AS13156-MNT. The address falls within the 84.91.136.0/22 network block. Registration is held at RIPE.
Where is 84.91.137.223 located?
Geolocation data places 84.91.137.223 in São Domingos de Rana, Lisbon, Portugal. The local time zone is Europe/Lisbon. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 84.91.137.223 malicious or safe?
84.91.137.223 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 84.91.137.223?
The reverse DNS (PTR) record for 84.91.137.223 is pa4-84-91-137-223.netvisao.pt. This hostname is forward-confirmed, meaning it resolves back to the same address.
