172.102.243.4
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 (11y) +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)
- mx1.shastaemail.com
- Forward-confirmed (FCrDNS)
- Not checked
- PTR TTL
- 3600 s
- Reverse DNS last checked
- 2026-10-05 07:50 UTC
Forward DNS records for mx1.shastaemail.com
| Type | Value | Priority | TTL |
|---|---|---|---|
| A | 172.102.243.4 | — | 600s |
| TXT | H8qezpnE | — | — |
| TXT | v=spf1 ip4:172.102.243.0/28 ip4:216.144.202.0/24 ip4:34.214.197.47 ip4:44.232.77.85 ip4:52.40.106.158 ip4:54.70.73.128 ip4:54.200.57.193 -all | — | — |
Reverse & forward DNS collected by the WorldIP scanner fleet — FCrDNS confirms the PTR hostname resolves back to this IP.
Domains hosted
as of 2026-10-04 UTC0
issued.live saw no domain resolving to this IP in its latest weekly snapshot.
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.
- mx1.shastaemail.com — May 31, 2026 → present 2 brief no-PTR dropouts
Network Allocation for 172.102.243.4
- CIDR range
- 172.102.240.0/21
- IP range (int)
- 2,892,427,264 — 2,892,429,311
- Prefix length
- /21
- Organization
- One Internet America, LLC
- ASN
- AS54623
- ASN name
- One Internet America, LLC
- Location
- Rancho Cucamonga, California, United States
- Coordinates
- 34.144100, -117.580500
- Accuracy radius
- 100 km
- Postal code
- 91737
- Regional Internet Registry
- ARIN
- Allocated
- 2015-06-30
- Data source(s)
- maxmind_city, maxmind_asn, ipinfo_lite, maxmind_country
- Last updated
- 2026-10-05 08:48:07
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 172.102.243.4?
172.102.243.4 is allocated to One Internet America, LLC (AS54623), registered in Rancho Cucamonga, United States.
Where is 172.102.243.4 located?
The geolocation for 172.102.243.4 maps to Rancho Cucamonga, United States 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 172.102.243.4 on?
172.102.243.4 belongs to the 172.102.240.0/21 network block announced by AS54623. This range contains 2,048 addresses.
Does 172.102.243.4 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.
