# 104.21.43.186 — IP Intelligence Summary

104.21.43.186 is an IPv4 address operated by Cloudflare, Inc. (AS13335), geolocated to United States. It belongs to datacenter or hosting infrastructure. As of November 4, 2026, IPDebrief rates it Low Risk (30/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/104.21.43.186
- Last updated: 2026-11-04

## Ownership

- Organization: Cloudflare, Inc.
- Network name: CLOUDFLARENET
- Allocated block: 104.16.0.0/12
- ASN: AS13335 (https://ipdebrief.com/asn/13335)
- Regional registry: ARIN
- Cloud / hosting provider: Cloudflare

## Location

- City: —
- Region: CA
- Country: United States
- Time zone: —

## Network classification

- Infrastructure type: CDN
- Datacenter / hosting: yes
- Residential: no
- Mobile: no
- Anycast: no
- Tor exit node: no
- VPN: no
- Proxy: no

## Risk assessment

- Assessment: Low Risk (30/100)
- Blocklist listings: 0
- Suspicious activity indicators: no
- Spam source: no

## Exposed services

- 80/tcp — http
- 443/tcp — https
- 8080/tcp — http-alt
- 8443/tcp — https-alt

## Analyst narrative

IP address 104.21.43.186 was identified as infrastructure associated with Cloudflare, Inc. (ASN 13335), operating within the CLOUDFLARENET network block (104.16.0.0/12). The endpoint functions as a Content Delivery Network (CDN) provider, actively serving web traffic on TCP ports 80, 443, 8080, and 8443. Observations recorded between October 31 and November 3, 2026, classified the address as Low Risk with a risk score of 30. No malicious indicators, known attacker associations, Tor exit node status, or blacklist listings were detected. The immediate subnet (104.21.43.0/24) maintained a clean classification with zero threat siblings. Despite the benign infrastructure classification, a medium-severity rate-limit recommendation was generated to manage potential traffic anomalies.

## Nearby addresses

- 104.21.43.88 (https://ipdebrief.com/104.21.43.88)
- 104.21.43.133 (https://ipdebrief.com/104.21.43.133)

---

Source: IPDebrief, "104.21.43.186 IP intelligence", https://ipdebrief.com/104.21.43.186, updated 2026-11-04. Assessments are probabilistic.