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
- Isp allocation +5
- Established allocation (10y) +3
- Trust score 83 / 100
Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
DNS records
- Reverse DNS (PTR)
- mail.s1-ttqlktx.edu.vn
- Forward-confirmed (FCrDNS)
- ✗ Mismatch
- PTR TTL
- 86400 s
- Reverse DNS last checked
- 2026-10-23 02:32 UTC
- Forward DNS last checked
- 2026-10-23 02:32 UTC
Forward DNS records for mail.s1-ttqlktx.edu.vn
| Type | Value | Priority | TTL |
|---|---|---|---|
| A | 103.216.75.100 | — | 172800s |
Reverse & forward DNS collected by the WorldIP scanner fleet — FCrDNS confirms the PTR hostname resolves back to this IP.
Domains hosted
as of 2026-10-18 UTC0
issued.live's latest DNS data shows no domain resolving to this IP.
Domain data provided by issued.live — for full details visit https://issued.live/pricing
Reverse DNS history
How this IP's reverse DNS (PTR) has changed over time, from our scans.
This IP's reverse DNS changes frequently — the timeline below shows the most recent changes.
- mail.s1-ttqlktx.edu.vn — Oct 22, 2026 → present
- s1-ttqlktx.edu.vn — Oct 21, 2026 → Oct 22, 2026
- mail.s1-ttqlktx.edu.vn — Oct 20, 2026 → Oct 21, 2026
- s1-ttqlktx.edu.vn — Oct 20, 2026 → Oct 20, 2026
- mail.s1-ttqlktx.edu.vn — Oct 16, 2026 → Oct 20, 2026
- s1-ttqlktx.edu.vn — Oct 16, 2026 → Oct 16, 2026
- mail.s1-ttqlktx.edu.vn — Oct 14, 2026 → Oct 16, 2026
- s1-ttqlktx.edu.vn — Oct 13, 2026 → Oct 14, 2026
- mail.s1-ttqlktx.edu.vn — Oct 6, 2026 → Oct 13, 2026
- s1-ttqlktx.edu.vn — Oct 5, 2026 → Oct 6, 2026
- mail.s1-ttqlktx.edu.vn — Oct 3, 2026 → Oct 5, 2026
- s1-ttqlktx.edu.vn — Oct 2, 2026 → Oct 3, 2026
- mail.s1-ttqlktx.edu.vn — Oct 1, 2026 → Oct 2, 2026
- s1-ttqlktx.edu.vn — Sep 30, 2026 → Oct 1, 2026
- mail.s1-ttqlktx.edu.vn — Sep 27, 2026 → Sep 30, 2026
- s1-ttqlktx.edu.vn — Sep 26, 2026 → Sep 27, 2026
- mail.s1-ttqlktx.edu.vn — Jun 21, 2026 → Sep 26, 2026
- s1-ttqlktx.edu.vn — Jun 12, 2026 → Jun 21, 2026
Network Allocation for 103.216.75.100
- CIDR range
- 103.216.75.0/25
- IP range (int)
- 1,742,228,224 — 1,742,228,351
- Prefix length
- /25
- Organization
- DCNET TELECOM
- ASN
- AS63741
- ASN name
- DCNET TELECOM
- Location
- Vietnam
- Coordinates
- 16.166700, 107.833300
- Accuracy radius
- 1000 km
- Regional Internet Registry
- APNIC
- Allocated
- 2016-04-28
- Data source(s)
- ipinfo_lite, maxmind_city, maxmind_country, maxmind_asn
- Last updated
- 2026-10-22 02:32:20
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 103.216.75.100?
103.216.75.100 is allocated to DCNET TELECOM (AS63741), registered in Vietnam.
Where is 103.216.75.100 located?
The geolocation for 103.216.75.100 maps to Vietnam 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 103.216.75.100 on?
103.216.75.100 belongs to the 103.216.75.0/25 network block announced by AS63741. This range contains 128 addresses.
Does 103.216.75.100 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.
