23.221.253.243
23.221.253.243 is an IPv4 address operated by AKAMAI-AS - Akamai Technologies, Inc., US (AS16625), with approximate network location Ashburn, United States. Its reverse DNS name is a23-221-253-243.deploy.static.akamaitechnologies.com. As of November 13, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Registered holder | Akamai International, BV |
| ASN | AS16625 |
| Network Name | AIBV |
| CIDR Block | 23.221.240.0/20 |
| RIR | ARIN |
| Network registration country | Netherlands |
| Routing operator | AKAMAI-AS - Akamai Technologies, Inc., US |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | a23-221-253-243.deploy.static.akamaitechnologies.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | a23-221-253-243.deploy.static.akamaitechnologies.com |
DNS Posture
Results describe the queried names. SPF, DMARC and CAA are domain policies, not requirements for every IP. DNSSEC here describes reverse DNS; inconclusive validation does not mean unsigned.
Not assessed: 0 conclusive IP DNS checks.
| caa | Not found at queried name com |
| spf | Unknown / lookup inconclusive a23-221-253-243.deploy.static.akamaitechnologies.com, cp601-prod.do.dsp.mp.microsoft.com, prod.do.dsp.mp.microsoft.com |
| dmarc | Unknown / lookup inconclusive _dmarc.a23-221-253-243.deploy.static.akamaitechnologies.com, _dmarc.cp601-prod.do.dsp.mp.microsoft.com, _dmarc.prod.do.dsp.mp.microsoft.com |
| dnssec | Unknown / lookup inconclusive 243.253.221.23.in-addr.arpa |
| fcrDns | Unknown / lookup inconclusive a23-221-253-243.deploy.static.akamaitechnologies.com |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Web Server |
| Network Tier | Unknown — Insufficient routing data to classify |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 80 | http | tcp | — |
| 443 | https | tcp | — |
| Closed Ports | 22, 25, 3389, 8080, 8443 (2 open / 7 scanned) | ||
| Server | Web server detected |
| HTTP Title | — |
🔐 TLS Certificate
| Port | Probe target | Certificate finding |
|---|---|---|
| (IP-targeted) | CN=cp601-prod.do.dsp.mp.microsoft.com, O=Microsoft Corporation, L=Redmond, S=WA, C=US Historical certificate; current certificate unknown |
| SANs | *.prod.do.dsp.mp.microsoft.comcp601-prod.do.dsp.mp.microsoft.com |
| Valid From | 2026-10-07T22:14:35+00:00 |
| Valid Until | 2027-04-23T22:14:35+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_256_GCM_SHA384 |
| Signature Algorithm | sha384RSA |
| Validity Period | 198 days |
🛡️ Public Network Snapshot
| Origin ASN | AS16625 |
| Network Prefix | 23.221.252.0/22 |
| Route mapping | Found |
| HSTS | Not detected |
| CSP | Not detected |
| HTTP/2 | Not detected |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 35% | 2 | 2 |
| routing | 25% | 1 | 1 |
| services | 35% | 2 | 2 |
| ownership | 50% | 2 | 3 |
| reputation | 25% | 1 | 1 |
| geolocation | 35% | 2 | 2 |
| Overall | 34% | 10 | 11 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (55%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-10-16 19:19:39 UTC |
| Last Seen | 2026-11-09 05:23:02 UTC |
| Profile Built | 2026-11-13 07:27:36 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 32 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 23.221.253.243
Who owns the IP address 23.221.253.243?
23.221.253.243 is registered to Akamai International, BV. The address falls within the 23.221.240.0/20 network block. Registration is held at ARIN.
Where is 23.221.253.243 located?
Geolocation data places 23.221.253.243 in Ashburn, VA, United States. The local time zone is America/New_York. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 23.221.253.243 malicious or safe?
23.221.253.243 currently carries a low risk assessment, meaning no significant threat indicators have been observed. This assessment is generated from continuously collected signals and can change over time.
What is the hostname for 23.221.253.243?
The reverse DNS (PTR) record for 23.221.253.243 is a23-221-253-243.deploy.static.akamaitechnologies.com. This hostname is forward-confirmed, meaning it resolves back to the same address.
What ports are open on 23.221.253.243?
Responsive ports observed on 23.221.253.243 include 80, 443. Port visibility reflects the most recent scan and may change as the host's configuration or firewall rules change.