# 18.161.21.28 — IP Intelligence Summary

18.161.21.28 is an IPv4 address operated by Amazon.com, Inc. (AS16509), geolocated to Boston, United States. It belongs to datacenter or hosting infrastructure with reverse DNS name server-18-161-21-28.bos50.r.cloudfront.net. As of October 5, 2026, IPDebrief rates it Low Risk (25/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/18.161.21.28
- Last updated: 2026-10-05

## Ownership

- Organization: Amazon.com, Inc.
- Network name: AMAZON-CF
- Allocated block: 18.160.0.0/15
- ASN: AS16509 (https://ipdebrief.com/asn/16509)
- Regional registry: ARIN
- Cloud / hosting provider: Amazon Web Services

## Location

- City: Boston
- Region: US-MA
- Country: United States
- Time zone: America/New_York

## Network classification

- Infrastructure type: CloudCompute
- Datacenter / hosting: yes
- 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

- server-18-161-21-28.bos50.r.cloudfront.net
- Forward-confirmed: yes

## Exposed services

- 80/tcp — http
- 443/tcp — https

## Nearby addresses

- 18.161.21.2 (https://ipdebrief.com/18.161.21.2)
- 18.161.21.3 (https://ipdebrief.com/18.161.21.3)
- 18.161.21.4 (https://ipdebrief.com/18.161.21.4)
- 18.161.21.5 (https://ipdebrief.com/18.161.21.5)
- 18.161.21.6 (https://ipdebrief.com/18.161.21.6)
- 18.161.21.7 (https://ipdebrief.com/18.161.21.7)
- 18.161.21.8 (https://ipdebrief.com/18.161.21.8)
- 18.161.21.9 (https://ipdebrief.com/18.161.21.9)
- 18.161.21.10 (https://ipdebrief.com/18.161.21.10)
- 18.161.21.11 (https://ipdebrief.com/18.161.21.11)
- 18.161.21.12 (https://ipdebrief.com/18.161.21.12)
- 18.161.21.14 (https://ipdebrief.com/18.161.21.14)

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Source: IPDebrief, "18.161.21.28 IP intelligence", https://ipdebrief.com/18.161.21.28, updated 2026-10-05. Assessments are probabilistic.