# 183.89.4.21 — IP Intelligence Summary

183.89.4.21 is an IPv4 address announced by AS138524, with approximate network location Chon Buri, Thailand. It belongs to a mobile network with reverse DNS name mx-ll-183.89.4-21.dynamic.3bb.co.th. As of November 12, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/183.89.4.21
- Last updated: 2026-11-12

## Ownership

- Organization: ADVANCED WIRELESS NETWORK COMPANY LIMITED administ
- Network name: AWN-CO-LTD-TH
- Allocated block: 183.89.0.0/16
- ASN: AS138524 (https://ipdebrief.com/asn/138524)
- Regional registry: APNIC
- Registered holder: ADVANCED WIRELESS NETWORK COMPANY LIMITED administ
- Routing operator: —
- Network registration country: TH
- Registrant address country: —

## Location

- City: Chon Buri
- Region: Chon Buri
- Country: Thailand
- Time zone: Asia/Bangkok

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

## Network classification

- Infrastructure type: MobileCarrier
- Datacenter / hosting: no
- Residential: no
- Mobile: yes
- 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

- mx-ll-183.89.4-21.dynamic.3bb.co.th
- Forward-confirmed: yes

## 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

## Nearby addresses

- 183.89.4.140 (https://ipdebrief.com/183.89.4.140)
- 183.89.4.178 (https://ipdebrief.com/183.89.4.178)

---

Source: IPDebrief, "183.89.4.21 IP intelligence", https://ipdebrief.com/183.89.4.21, updated 2026-11-12. Assessments are probabilistic.