Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Not on any threat blocklist +5
- Has a reverse-DNS (PTR) record +5
- Established allocation (14y) +3
- Trust score 78 / 100
Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
Reverse DNS history
How this IP's reverse DNS (PTR) has changed over time, from our scans.
Reverse-DNS changes between Sep 25, 2026 and Sep 27, 2026 were not recorded; the current PTR is shown from its earliest retained observation.
- no PTR — since at least Sep 27, 2026 → present
- cust-5-104-17-128.unartel.cz — Sep 25, 2026 → Sep 27, 2026
- 5-104-17-128.members.slavicin.unart.cz — Aug 18, 2026 → Sep 25, 2026
- no PTR — Aug 18, 2026 → Aug 18, 2026
- 5-104-17-128.members.slavicin.unart.cz — Jun 11, 2026 → Aug 18, 2026
Network Allocation for 5.104.17.128
- CIDR range
- 5.104.16.0/21
- IP range (int)
- 90,705,920 — 90,707,967
- Prefix length
- /21
- Organization
- UnArtel s.r.o.
- ASN
- AS198977
- ASN name
- UnArtel s.r.o.
- Location
- Slavičín, Zl N, Czechia
- Coordinates
- 49.086200, 17.887600
- Accuracy radius
- 10 km
- Postal code
- 763 21
- Regional Internet Registry
- RIPE
- Allocated
- 2012-06-28
- Data source(s)
- maxmind_city, maxmind_country, maxmind_asn, ipinfo_lite
- Last updated
- 2026-09-27 05:19:51
BGP Routing
Live BGP anomalies →Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.
Frequently Asked Questions
Who owns 5.104.17.128?
5.104.17.128 is allocated to UnArtel s.r.o. (AS198977), registered in Slavičín, Czechia.
Where is 5.104.17.128 located?
The geolocation for 5.104.17.128 maps to Slavičín, Czechia based on MaxMind GeoLite2 data. Accuracy depends on the provider and may represent the ISP's regional hub rather than the exact endpoint.
What network is 5.104.17.128 on?
5.104.17.128 belongs to the 5.104.16.0/21 network block announced by AS198977. This range contains 2,048 addresses.
Does 5.104.17.128 have a reverse DNS record?
Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.
Neighbors
Other addresses in the same /24.
