# 18.227.51.139 — IP Intelligence Summary

18.227.51.139 is an IPv4 address operated by AMAZON-02 - Amazon.com, Inc., US (AS16509), with approximate network location Columbus, United States. As of November 14, 2026, IPDebrief rates it Low Risk (10/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/18.227.51.139
- Last updated: 2026-11-14

## Ownership

- Organization: Amazon Technologies Inc.
- Network name: AT-88-Z
- Allocated block: 18.32.0.0/11
- ASN: AS16509 (https://ipdebrief.com/asn/16509)
- Regional registry: ARIN
- Registered holder: Amazon Technologies Inc.
- Routing operator: AMAZON-02 - Amazon.com, Inc., US
- Network registration country: United States
- Registrant address country: —
- Cloud / hosting provider: Amazon Web Services

## Location

- City: Columbus
- Region: Ohio
- Country: United States
- Time zone: —

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

## Network classification

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

## Risk assessment

- Assessment: Low Risk (10/100)
- Blocklist listings: 0
- Suspicious activity indicators: no
- Spam source: no

## Exposed services

- 443/tcp — https

## DNS posture

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

- caa: Not checked
- spf: Not checked
- dmarc: Not checked
- dnssec: Not checked
- fcrDns: Not checked

## TLS observations

- CN=lms-aws-us-east-2.roblox.com; port unknown; target —; Historical certificate; current certificate unknown; valid until 2027-04-07T23:59:59.0000000+00:00

## Addresses sharing infrastructure

- 3.14.219.186 — Same TLS certificate (https://ipdebrief.com/3.14.219.186)
- 3.20.4.45 — Same TLS certificate (https://ipdebrief.com/3.20.4.45)
- 3.139.28.172 — Same TLS certificate (https://ipdebrief.com/3.139.28.172)
- 3.143.69.254 — Same TLS certificate (https://ipdebrief.com/3.143.69.254)
- 18.117.25.30 — Same TLS certificate (https://ipdebrief.com/18.117.25.30)
- 18.221.253.134 — Same TLS certificate (https://ipdebrief.com/18.221.253.134)
- 77.113.12.186 — Same TLS certificate (https://ipdebrief.com/77.113.12.186)

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Source: IPDebrief, "18.227.51.139 IP intelligence", https://ipdebrief.com/18.227.51.139, updated 2026-11-14. Assessments are probabilistic.