`api.topcoder.com`

DNSSEC	⚠️ Not signed
A	3.95.84.82^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
		PTR	`ec2-3-95-84-82.compute-1.amazonaws.com`
A	54.83.41.124^{🇺🇸 Amazon54.80.0.0/14 EC2 IAD prefix}
A	54.156.153.201^{🇺🇸 Amazon54.156.0.0/14 EC2 IAD prefix}

`topcoder.com`

	DNSSEC	⚠️ Not signed
	A	3.95.84.82^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
	A	54.83.41.124^{🇺🇸 Amazon54.80.0.0/14 EC2 IAD prefix}
	A	54.156.153.201^{🇺🇸 Amazon54.156.0.0/14 EC2 IAD prefix}
	NS	`ns-1916.awsdns-47.co.uk` ⭐
	NS	`ns-1435.awsdns-51.org`
	NS	`ns-32.awsdns-04.com`
	NS	`ns-677.awsdns-20.net`
	MX	`topcoder-com.mail.protection.outlook.com` ⭐
	TXT	`MS=ms20073706`
	TXT	`MS=ms23759231`
	TXT	`MS=ms44288208`
	TXT	`_globalsign-domain-verification=jXiWaCVO93prZlMVt6v8jbAryOZqlOXq62Qhr6m3RM`
	TXT	`atlassian-domain-verification=+w2kTGdJUmIadT3Z6ZvXEscJ4Uy1ZzK8fAd9FkhHTX5dJB7...`
	TXT	`dls4pqf246mukrf72idavk9l3g`
	TXT	`docusign=953f4549-607e-46f6-bf11-2cb19ce17157`
	TXT	`google-site-verification=2mx-vBhouJ1CBg7zcfjojmXumIc9_ydV2CjySPifStk`
	TXT	`google-site-verification=30UfLo5U-eaGkOC5qWNCDLOoMo5w5IALPwF60UpPHZ8`
	TXT	`google-site-verification=5SodLKZzELdBw6825qNrjIGAktHnJa0LOXKi5450aTo`
	TXT	`google-site-verification=I2-vokJxAW7yo94ZnfE5oPV8li8GmGwMHEWiMCA2rCQ`
	TXT	`google-site-verification=P4bA6xyIh48pl3AS0TSwsCH9CMrQkeZOQ29fX81BSZI`
	TXT	`growsurf=mn3hmp`
	TXT	`h1-domain-verification=sKDFb5pWdrRSUVFAYavot1mDhMwC2ET1TyN26tgrMi5noc2G`
	TXT	`mongodb-site-verification=6zXNzVaVQossZaSV8HTbJ3zmaUrPusCh`
	TXT	`segment-site-verification=B6OW8Cqms9KaRs3DpqnieB26cJIepPKr`
	TXT	`status-page-domain-verification=w978dxn9smwn`
	TXT	`unbounce=381395`
	TXT	`v=spf1 ip4:54.165.99.226/32 ip4:34.235.47.21/32 ip4:10.25.35.223/32 include:m...`
	SOA	`ns-1916.awsdns-47.co.uk`awsdns-hostmaster@amazon.com serial=1

WOT: SAFE (93/100)
rank #19400 globally
rank #9618 in the tld
WOT: SAFE (93/100)
📈 Tranco rank: #50,833

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DNS History

11 records (3 active, 8 former)

○A100.30.135.2482026-04-24 → 2026-04-24 · 1 obs

○ 2026-04-24 01:56:50

○A18.215.219.1702026-04-24 → 2026-04-24 · 1 obs

○ 2026-04-24 01:56:50

●A3.95.84.822026-04-24 → 2026-04-24 · 2 obs

○ 2017-09-25 13:18:22
● 2026-04-24 01:56:50

○A34.192.57.1692017-01-15 → 2017-01-15 · 3 obs

● 2017-01-15 19:36:54
○ 2017-08-14 23:35:06
○ 2026-04-24 01:56:50

○A34.229.5.1192017-08-14 → 2017-09-25 · 4 obs

○ 2017-01-15 19:36:54
● 2017-08-14 23:35:06
● 2017-09-25 13:18:22
○ 2026-04-24 01:56:50

○A52.1.71.22017-01-15 → 2017-01-15 · 3 obs

● 2017-01-15 19:36:54
○ 2017-08-14 23:35:06
○ 2026-04-24 01:56:50

○A54.152.30.162026-04-24 → 2026-04-24 · 1 obs

○ 2026-04-24 01:56:50

●A54.156.153.2012026-04-24 → 2026-04-24 · 2 obs

○ 2017-09-25 13:18:22
● 2026-04-24 01:56:50

○A54.164.32.482017-08-14 → 2017-09-25 · 4 obs

○ 2017-01-15 19:36:54
● 2017-08-14 23:35:06
● 2017-09-25 13:18:22
○ 2026-04-24 01:56:50

●A54.83.41.1242026-04-24 → 2026-04-24 · 2 obs

○ 2017-09-25 13:18:22
● 2026-04-24 01:56:50

○CNAMEsophos-cf-elasticl-1hdq9pe5m6afg-1835532763.us-east-1.elb.amazonaws.com2017-01-15 → 2017-01-15 · 3 obs

● 2017-01-15 19:36:54
○ 2017-08-14 23:35:06
○ 2026-04-24 01:56:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
topcoder.com	ns-32.awsdns-04.com, ns-677.awsdns-20.net, ns-1916.awsdns-47.co.uk, ns-1435.awsdns-51.org	2 records

✅ Authoritative Response

Server:205.251.197.155

NS records: ns-32.awsdns-04.com, ns-677.awsdns-20.net, ns-1916.awsdns-47.co.uk, ns-1435.awsdns-51.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for topcoder.com (unsigned zone)

⏱️ Timing

Total: 419ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`3.95.84.82, 54.156.153.201...`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-32.awsdns-04.com, ns-32.awsdns-04.com)

Analysis

IP Addresses

Three IP numbers (3.95.84.82, 54.83.41.124 and 54.156.153.201) are pointed to by api.topcoder.com.

other host names for instance arena.topcoder.com, topcoder.com, accounts.topcoder.com, ec2-54-83-41-124.compute-1.amazonaws.com and ec2-54-156-153-201.compute-1.amazonaws.com share IP numbers with api.topcoder.com.

api.topcoder.com - robtex.com

api.topcoder.com

topcoder.com

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

`api.topcoder.com`

`topcoder.com`