# 208.83.231.137 — IP Intelligence Summary

208.83.231.137 is an IPv4 address operated by Sumofiber (AS4226), geolocated to Chicago, United States. Its reverse DNS name is 100g-mx204.idf.sumofiber.com. As of October 27, 2026, IPDebrief rates it High Risk (70/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/208.83.231.137
- Last updated: 2026-10-27

## Ownership

- Organization: Sumofiber
- Network name: SUMOFIBER
- Allocated block: 208.83.224.0/21
- ASN: AS4226 (https://ipdebrief.com/asn/4226)
- Regional registry: ARIN

## Location

- City: Chicago
- Region: US-IL
- Country: United States
- Time zone: America/Chicago

## Network classification

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

## Risk assessment

- Assessment: High Risk (70/100)
- Blocklist listings: 0
- Suspicious activity indicators: no
- Spam source: no

## Reverse DNS

- 100g-mx204.idf.sumofiber.com
- Forward-confirmed: no

## Nearby addresses

- 208.83.231.73 (https://ipdebrief.com/208.83.231.73)
- 208.83.231.128 (https://ipdebrief.com/208.83.231.128)
- 208.83.231.135 (https://ipdebrief.com/208.83.231.135)

## Addresses sharing infrastructure

- 38.148.20.75 — Same abuse contact (https://ipdebrief.com/38.148.20.75)
- 38.148.24.50 — Same abuse contact (https://ipdebrief.com/38.148.24.50)
- 38.148.99.59 — Same abuse contact (https://ipdebrief.com/38.148.99.59)
- 162.221.117.102 — Same abuse contact (https://ipdebrief.com/162.221.117.102)
- 162.221.117.117 — Same abuse contact (https://ipdebrief.com/162.221.117.117)
- 162.221.117.122 — Same abuse contact (https://ipdebrief.com/162.221.117.122)
- 162.221.118.98 — Same abuse contact (https://ipdebrief.com/162.221.118.98)
- 198.91.48.30 — Same abuse contact (https://ipdebrief.com/198.91.48.30)

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Source: IPDebrief, "208.83.231.137 IP intelligence", https://ipdebrief.com/208.83.231.137, updated 2026-10-27. Assessments are probabilistic.