# 18.161.31.156 — IP Intelligence Summary

18.161.31.156 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-18-161-31-156.bos50.r.cloudfront.net. As of November 4, 2026, IPDebrief rates it Low Risk (25/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/18.161.31.156
- Last updated: 2026-11-04

## 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-18-161-31-156.bos50.r.cloudfront.net
- Forward-confirmed: yes

## Exposed services

- 80/tcp — http
- 443/tcp — https

## Addresses sharing infrastructure

- 13.33.75.113 — Same TLS certificate (https://ipdebrief.com/13.33.75.113)
- 13.33.87.150 — Same TLS certificate (https://ipdebrief.com/13.33.87.150)
- 13.33.157.182 — Same TLS certificate (https://ipdebrief.com/13.33.157.182)
- 13.33.168.210 — Same TLS certificate (https://ipdebrief.com/13.33.168.210)
- 18.161.20.155 — Same TLS certificate (https://ipdebrief.com/18.161.20.155)
- 18.161.20.156 — Same TLS certificate (https://ipdebrief.com/18.161.20.156)
- 18.161.38.14 — Same TLS certificate (https://ipdebrief.com/18.161.38.14)
- 18.239.181.184 — Same TLS certificate (https://ipdebrief.com/18.239.181.184)
- 151.101.1.16 — Same TLS certificate (https://ipdebrief.com/151.101.1.16)
- 151.101.33.16 — Same TLS certificate (https://ipdebrief.com/151.101.33.16)
- 151.101.129.16 — Same TLS certificate (https://ipdebrief.com/151.101.129.16)
- 151.101.193.16 — Same TLS certificate (https://ipdebrief.com/151.101.193.16)

---

Source: IPDebrief, "18.161.31.156 IP intelligence", https://ipdebrief.com/18.161.31.156, updated 2026-11-04. Assessments are probabilistic.