187.121.139.187
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
- Long-established allocation (16y) +6
- Not on any threat blocklist +5
- Has a reverse-DNS (PTR) record +5
- Isp allocation +5
- Trust score 86 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
DNS records
- Reverse DNS (PTR)
- r611-piraju.ibys.com.br
- Forward-confirmed (FCrDNS)
- ✗ Mismatch
- PTR TTL
- 86399 s
- Reverse DNS last checked
- 2026-07-24 05:33 UTC
- Forward DNS last checked
- 2026-07-24 05:33 UTC
Reverse & forward DNS collected by the WorldIP scanner fleet — FCrDNS confirms the PTR hostname resolves back to this IP.
Network Allocation for 187.121.139.187
- CIDR range
- 187.121.139.0/24
- IP range (int)
- 3,145,304,832 — 3,145,305,087
- Prefix length
- /24
- Organization
- SERCOMTEL SA TELECOMUNICACOES
- ASN
- AS22689
- ASN name
- SERCOMTEL S/A TELECOMUNICACOES
- Location
- Duque de Caxias, Rio De Janeiro, Brazil
- Coordinates
- -22.830500, -43.219200
- Accuracy radius
- 1000 km
- Postal code
- 25000
- Regional Internet Registry
- LACNIC
- Allocated
- 2010-03-02
- Data source(s)
- maxmind_asn, maxmind_city, ipinfo_lite, maxmind_country
- Last updated
- 2026-06-16 00:22:13
BGP Routing
Live BGP anomalies →Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.
RIR Ownership History
Atom feed ⇲Allocation changes captured weekly from regional internet registry (RIR) delegation files for ranges that have contained this IP.
| Date | Event | From | To |
|---|---|---|---|
| 2026-05-10 | New Allocation | — | BR |
See the full history for 187.121.0.0/16.
Frequently Asked Questions
Who owns 187.121.139.187?
187.121.139.187 is allocated to SERCOMTEL SA TELECOMUNICACOES (AS22689), registered in Duque de Caxias, Brazil.
Where is 187.121.139.187 located?
The geolocation for 187.121.139.187 maps to Duque de Caxias, Brazil 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 187.121.139.187 on?
187.121.139.187 belongs to the 187.121.139.0/24 network block announced by AS22689. This range contains 256 addresses.
Does 187.121.139.187 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.
