# 3.5.78.57 — IP Intelligence Summary

3.5.78.57 is an IPv4 address operated by Amazon Data Services Northern Virginia (AS16509), geolocated to Portland, United States. Its reverse DNS name is s3-w.us-west-2.amazonaws.com. As of November 2, 2026, IPDebrief rates it Low Risk (25/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/3.5.78.57
- Last updated: 2026-11-02

## Ownership

- Organization: Amazon Data Services Northern Virginia
- Network name: AMAZON-S3
- Allocated block: 3.5.0.0/16
- ASN: AS16509 (https://ipdebrief.com/asn/16509)
- Regional registry: ARIN
- Cloud / hosting provider: Amazon Web Services

## Location

- City: Portland
- Region: OR
- Country: United States
- Time zone: America/Los_Angeles

## Network classification

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

## Risk assessment

- Assessment: Low Risk (25/100)
- Blocklist listings: 0
- Suspicious activity indicators: no
- Spam source: no

## Reverse DNS

- s3-w.us-west-2.amazonaws.com
- Forward-confirmed: no

## Exposed services

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

## Analyst narrative

IP address 3.5.78.57 was assigned to AS16509 (Amazon Data Services Northern Virginia) within the AMAZON-S3 network block. Ownership records showed the endpoint functioned as a Web Server hosting Amazon S3 infrastructure with open ports 80, 443, and 8080. The address maintained a Low Risk status with a risk score of 25.

No known attacker indicators or blacklist hits were present, though the threat actor profile was classified as a Suspicious Host. Neighborhood data indicated a mostly clean classification with an abuse density of 0.1818, but four threat siblings were detected within the subnet. A contradiction existed between the claimed Portland, OR geolocation and RTT physics measurements. The latest observation was recorded on 2026-10-23.

The recommended action was to Monitor the traffic at low severity.

## Nearby addresses

- 3.5.78.15 (https://ipdebrief.com/3.5.78.15)
- 3.5.78.19 (https://ipdebrief.com/3.5.78.19)
- 3.5.78.27 (https://ipdebrief.com/3.5.78.27)
- 3.5.78.31 (https://ipdebrief.com/3.5.78.31)
- 3.5.78.50 (https://ipdebrief.com/3.5.78.50)
- 3.5.78.52 (https://ipdebrief.com/3.5.78.52)
- 3.5.78.62 (https://ipdebrief.com/3.5.78.62)
- 3.5.78.202 (https://ipdebrief.com/3.5.78.202)
- 3.5.78.203 (https://ipdebrief.com/3.5.78.203)
- 3.5.78.214 (https://ipdebrief.com/3.5.78.214)
- 3.5.78.217 (https://ipdebrief.com/3.5.78.217)
- 3.5.78.218 (https://ipdebrief.com/3.5.78.218)

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Source: IPDebrief, "3.5.78.57 IP intelligence", https://ipdebrief.com/3.5.78.57, updated 2026-11-02. Assessments are probabilistic.