# 18.225.121.91 — IP Intelligence Summary

18.225.121.91 is an IPv4 address operated by Amazon Web Services (AS16509), with approximate network location Columbus, United States. Its reverse DNS name is ec2-18-225-121-91.us-east-2.compute.amazonaws.com. As of November 12, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/18.225.121.91
- Last updated: 2026-11-12

## 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: —
- Network registration country: United States
- Registrant address country: —
- Cloud / hosting provider: Amazon Web Services

## Location

- City: Columbus
- Region: OH
- Country: United States
- Time zone: America/New_York

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 (0/100)
- Blocklist listings: 0
- Suspicious activity indicators: no
- Spam source: no

## Reverse DNS

- ec2-18-225-121-91.us-east-2.compute.amazonaws.com
- Forward-confirmed: yes

## Exposed services

- 443/tcp — https

## DNS posture

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

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

## TLS observations

- CN=*.samsunggeopush.com, O="SAMSUNG ELECTRONICS CO,.LTD", S=Gyeonggi-do, C=KR; port unknown; target —; Historical certificate; current certificate unknown; valid until 2027-03-13T23:59:59.0000000+00:00

## Nearby addresses

- 18.225.121.140 (https://ipdebrief.com/18.225.121.140)

## Addresses sharing infrastructure

- 3.133.43.11 — Same TLS certificate (https://ipdebrief.com/3.133.43.11)
- 3.149.159.107 — Same TLS certificate (https://ipdebrief.com/3.149.159.107)
- 13.59.138.241 — Same TLS certificate (https://ipdebrief.com/13.59.138.241)
- 18.223.207.159 — Same TLS certificate (https://ipdebrief.com/18.223.207.159)
- 18.227.184.249 — Same TLS certificate (https://ipdebrief.com/18.227.184.249)

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Source: IPDebrief, "18.225.121.91 IP intelligence", https://ipdebrief.com/18.225.121.91, updated 2026-11-12. Assessments are probabilistic.