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WorldIP.io
IPv4 Address

204.15.73.135

CIDR
/21 · 2.0K IPs
ASN
Amazon.com, Inc.
Reverse DNS
energisa.com.br
Last scanned 4 hr ago
Blocklisted
Checking…
Scanning blocklists

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

75/100
Moderate
How this score is built

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

DNS records

Reverse DNS (PTR)
energisa.com.br
Forward-confirmed (FCrDNS)
Not checked
PTR TTL
21600 s
Reverse DNS last checked
2026-11-12 23:17 UTC

Forward DNS records for energisa.com.br

TypeValuePriorityTTL
A 173.223.234.132 — 20s
A 173.223.234.143 — 20s
A 23.196.3.181 — 172800s
A 23.196.3.208 — 172800s
A 23.210.216.162 — 20s
A 23.210.216.164 — 20s
A 23.212.251.16 — 172800s
A 23.212.251.26 — 172800s
A 23.214.22.135 — 172800s
A 23.214.22.144 — 172800s
A 23.214.22.147 — 172800s
A 23.215.55.166 — 172800s
A 23.215.55.173 — 172800s
A 23.216.147.139 — 20s
A 23.216.147.142 — 20s
A 23.221.22.68 — 20s
A 23.221.22.85 — 20s
A 23.33.29.134 — 20s
A 23.33.29.142 — 20s
A 23.35.26.41 — 20s
A 23.35.26.61 — 20s
A 23.39.174.139 — 172800s
A 23.39.174.155 — 172800s
A 23.48.203.101 — 300s
A 23.48.203.114 — 300s
A 23.48.203.168 — 172800s
A 23.48.203.185 — 172800s
A 23.48.203.218 — 172800s
A 23.53.11.135 — 172800s
A 23.53.11.137 — 172800s
A 23.53.11.169 — 172800s
A 23.53.11.176 — 172800s
A 23.73.207.11 — 172800s
A 23.73.207.5 — 172800s
AAAA 2600:1404:1200:25::1726:6f50 — 172800s
AAAA 2600:1404:1200:25::1726:6f52 — 172800s
AAAA 2600:1405:1000:6::17d6:1667 — 172800s
AAAA 2600:1405:1000:6::17d6:1668 — 172800s
AAAA 2600:1408:5400:35::17ca:e6c4 — 172800s
AAAA 2600:1408:5400:35::17ca:e6c7 — 172800s
AAAA 2600:1408:ec00:10::1730:cb0f — 172800s
AAAA 2600:1408:ec00:10::1730:cb12 — 172800s
AAAA 2600:1408:ec00:10::1730:cb13 — 172800s
AAAA 2600:1408:ec00:2e::1735:ba9 — 172800s
AAAA 2600:1408:ec00:2e::1735:bb0 — 172800s
AAAA 2600:141b:1c00:36::17d2:5cac — 172800s
AAAA 2600:141b:1c00:36::17d2:5caf — 172800s
MX energisa-com-br.mail.protection.outlook.com 0 —
NS a1-40.akam.net — —
NS a11-64.akam.net — —
NS a12-65.akam.net — —
NS a16-67.akam.net — —
NS a6-64.akam.net — —
NS a7-66.akam.net — —
TXT 071FEEEFF3D264EF3600FE1C588FCE5A43CA1AE964D40D0298434B0E000FFE8D — —
TXT 4F15jf8hnP+2O5uOngtR/tJa4qB9UsiV+tiioJryMMaXDiRS6X+qQg7CQBDh0j/9f6SGjYTwujry3rSyoZ+U9A== — —
TXT MS=77F6B41619C9057EA01BE77B750ABB02BBFAFB0E — —
TXT MS=ms14837545 — —
TXT RIOfXDEba/FLk2EY1uMhnl4AvSoF9QtYN+RzpRe9MQp0y43yMiRlmI7BfPphw1b6VWfy6wiVDqgmCD56osAuSg== — —
TXT anthropic-domain-verification-1h41sm=hbYgAU0K0oy2rrqHVdPxIioOQ — —
TXT anthropic-domain-verification-498w6q=j7yAvGXO3ydvWOG3wolu3oVEk — —
TXT docusign=3ca12236-daed-4109-8ee5-7e281ce2e96f — —
TXT google-site-verification=3lH-2ftXEAmLj_htj1BwPyuieWHoAtGQlpYomqpjDDc — —
TXT google-site-verification=4drkaiezMGtXLQ4L5O99dd6dzAXgBIyEYCw8G0_HB84 — —
TXT google-site-verification=zUlgSJElbI3-VspFTNQrAFZ19UouxnKs0o_H6twEwSg — —
TXT miro-verification=04e89412e27e716ba0a1b12b660870ddb40bd3e0 — —
TXT mongodb-site-verification=wBJkXSPFSxmOov8gnDGgVdDmZyZccECO — —
TXT onetrust-domain-verification=395f86be24854c2a8dcea0227319c9e1 — —
TXT onetrust-domain-verification=b6e679a403304615b85a41e8c5fa6287 — —
TXT v=DMARC1; p=reject; pct=100; rua=mailto:relatorio.dmarc@energisa.com.br; ruf=mailto:falhas.dmarc@energisa.com.br; fo=1 — —
TXT v=spf1 ip4:191.6.4.101/32 ip4:191.6.4.121/24 ip4:177.39.235.120/29 ip4:15.229.170.18 ip4:18.228.244.232 ip4:177.184.23.182 include:spf.protection.outlook.com include:spf-27.mailgrid.net.br include:spf-us.emailsignatures365.com -all — —
every IP & sub-domain we've seen under this domain

Reverse & forward DNS collected by the WorldIP scanner fleet — FCrDNS confirms the PTR hostname resolves back to this IP.

Domains hosted

as of 2026-11-13 UTC

0

issued.live's latest DNS data shows no domain resolving to this IP.

Domain data provided by issued.live — for full details visit https://issued.live/pricing

Network Allocation for 204.15.73.135

CIDR range
204.15.72.0/21
IP range (int)
3,423,553,536 — 3,423,555,583
Prefix length
/21
Organization
Amazon.com, Inc.
ASN
AS16509
ASN name
Amazon.com, Inc.
Location
United States
Coordinates
37.751000, -97.822000
Accuracy radius
1000 km
Regional Internet Registry
ARIN
Allocated
2023-08-09
Data source(s)
maxmind_asn, ipinfo_lite, maxmind_city, maxmind_country
Last updated
2026-11-12 08:50:08

Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.

Announced prefix
Origin AS
Announcement samples
13,350
Last seen
2026-11-13 02:11:31

Frequently Asked Questions

Who owns 204.15.73.135?

204.15.73.135 is allocated to Amazon.com, Inc. (AS16509), registered in United States.

Where is 204.15.73.135 located?

The geolocation for 204.15.73.135 maps to United States based on MaxMind GeoLite2 data. Accuracy depends on the provider and may represent the ISP's regional hub rather than the exact endpoint.

What network is 204.15.73.135 on?

204.15.73.135 belongs to the 204.15.72.0/21 network block announced by AS16509. This range contains 2,048 addresses.

Does 204.15.73.135 have a reverse DNS record?

Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.

Neighbors

Other addresses in the same /24.

Related

Last updated: 2026-11-13 03:18:26 UTC
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