# 181.236.133.171 — IP Intelligence Summary

181.236.133.171 is an IPv4 address operated by AS3816 - COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, CO (AS3816), with approximate network location Barranquilla, Colombia. It belongs to a residential connection. As of November 13, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/181.236.133.171
- Last updated: 2026-11-13

## Ownership

- Organization: COLOMBIA TELECOMUNICACIONES S.A. ESP BIC
- Network name: 181.236.0.0 - 181.237.255.255
- Allocated block: 181.236.0.0/15
- ASN: AS3816 (https://ipdebrief.com/asn/3816)
- Regional registry: LACNIC
- Registered holder: COLOMBIA TELECOMUNICACIONES S.A. ESP BIC
- Routing operator: AS3816 - COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, CO
- Network registration country: —
- Registrant address country: CO

## Location

- City: Barranquilla
- Region: Atlántico
- Country: Colombia
- Time zone: America/Bogota

Approximate network location; registration and certificate addresses are not server-location evidence.

## Network classification

- Infrastructure type: Residential
- Datacenter / hosting: no
- Residential: yes
- Mobile: no
- Anycast: Unverified (not proof of unicast)
- Tor exit node: no
- VPN: no
- Proxy: no

## Risk assessment

- Assessment: Low Risk (0/100)
- Blocklist listings: 0
- Suspicious activity indicators: no
- Spam source: no

## DNS posture

Mail authentication and CAA are optional domain policies, not IP-wide requirements.

- caa: Not applicable (—)
- spf: Unknown / lookup inconclusive (—)
- dmarc: Unknown / lookup inconclusive (—)
- dnssec: Unknown / lookup inconclusive (171.133.236.181.in-addr.arpa)
- fcrDns: Unknown / lookup inconclusive

- TLS probe 443 at 181.236.133.171: Certificate not captured; current certificate unknown (unreachable)
- TLS probe 8443 at 181.236.133.171: Certificate not captured; current certificate unknown (unreachable)
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Source: IPDebrief, "181.236.133.171 IP intelligence", https://ipdebrief.com/181.236.133.171, updated 2026-11-13. Assessments are probabilistic.