topcoder.com - robtex.com

topcoder.com

DNSSEC⚠️ Not signed
A3.95.84.82🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix
PTRec2-3-95-84-82.compute-1.amazonaws.com
A54.83.41.124🇺🇸 Amazon54.80.0.0/14 EC2 IAD prefix
A54.156.153.201🇺🇸 Amazon54.156.0.0/14 EC2 IAD prefix
NSns-1916.awsdns-47.co.uk ⭐
A2600:9000:5307:7c00::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront
PTRns-1916.awsdns-47.co.uk
A205.251.199.124🇺🇸 Amazon205.251.199.0/24 prefix
PTRns-1916.awsdns-47.co.uk
NSns-1435.awsdns-51.org
A2600:9000:5305:9b00::1🇺🇸 Amazon2600:9000:5305::/48 - CloudFront
PTRns-1435.awsdns-51.org
A205.251.197.155🇺🇸 Amazon205.251.197.0/24 prefix
PTRns-1435.awsdns-51.org
NSns-32.awsdns-04.com
A2600:9000:5300:2000::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront
PTRns-32.awsdns-04.com
A205.251.192.32🇺🇸 Amazon205.251.192.0/24 prefix
PTRns-32.awsdns-04.com
NSns-677.awsdns-20.net
A2600:9000:5302:a500::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront
PTRns-677.awsdns-20.net
A205.251.194.165🇺🇸 Amazon205.251.194.0/24 prefix
PTRns-677.awsdns-20.net
MXtopcoder-com.mail.protection.outlook.com ⭐
A52.101.124.117🇯🇵 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-tydpr03cu00105.inbound.protection.outlook.com
A52.101.137.0🇸🇬 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-sg2pr03cu00500.inbound.protection.outlook.com
A52.101.157.80🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-os8pr02cu00100.inbound.protection.outlook.com
TXTMS=ms20073706
TXTMS=ms23759231
TXTMS=ms44288208
TXT_globalsign-domain-verification=jXiWaCVO93prZlMVt6v8jbAryOZqlOXq62Qhr6m3RM
TXTatlassian-domain-verification=+w2kTGdJUmIadT3Z6ZvXEscJ4Uy1ZzK8fAd9FkhHTX5dJB7...
TXTdls4pqf246mukrf72idavk9l3g
TXTdocusign=953f4549-607e-46f6-bf11-2cb19ce17157
TXTgoogle-site-verification=2mx-vBhouJ1CBg7zcfjojmXumIc9_ydV2CjySPifStk
TXTgoogle-site-verification=30UfLo5U-eaGkOC5qWNCDLOoMo5w5IALPwF60UpPHZ8
TXTgoogle-site-verification=5SodLKZzELdBw6825qNrjIGAktHnJa0LOXKi5450aTo
TXTgoogle-site-verification=I2-vokJxAW7yo94ZnfE5oPV8li8GmGwMHEWiMCA2rCQ
TXTgoogle-site-verification=P4bA6xyIh48pl3AS0TSwsCH9CMrQkeZOQ29fX81BSZI
TXTgrowsurf=mn3hmp
TXTh1-domain-verification=sKDFb5pWdrRSUVFAYavot1mDhMwC2ET1TyN26tgrMi5noc2G
TXTmongodb-site-verification=6zXNzVaVQossZaSV8HTbJ3zmaUrPusCh
TXTsegment-site-verification=B6OW8Cqms9KaRs3DpqnieB26cJIepPKr
TXTstatus-page-domain-verification=w978dxn9smwn
TXTunbounce=381395
TXTv=spf1 ip4:54.165.99.226/32 ip4:34.235.47.21/32 ip4:10.25.35.223/32 include:m...
SOAns-1916.awsdns-47.co.ukawsdns-hostmaster@amazon.com serial=1

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1776988831
rank #19400 globally
rank #9618 in the tld
WOT: SAFE (93/100)
📈 Tranco rank: #50,833

Subdomains

arena.topcoder.com
accounts.topcoder.com
topgear.topcoder.com
archive.topcoder.com
community.topcoder.com
api.topcoder.com
www.topcoder.com
forums.topcoder.com

Same first word

topcoder.be
topcoder.dk
topcoder.nl
topcoder.ru
topcoder.at
topcoder.in
topcoder.sk
topcoder.pl
topcoder.me
topcoder.site
topcoder.net
topcoder.co
topcoder.ch
topcoder.es
topcoder.com.es
topcoder.eu
topcoder.ai
topcoder.biz
topcoder.hu
topcoder.org
topcoder.co.in
topcoder.de
topcoder.se
topcoder.com

Similar names

dtcooper.com
topdecor.nl
redocpot.com
portcode.xyz
topdecor.de
topdecor.ir
pedoctor.com
prodotec.com
prodotec.it
codeport.com
decoport.com
topdecor.fr
docporte.com
decoport.de
optdecor.com
codeport.no
decoport.net
topdecor.cz
epdoctor.com
topdecor.com
topdecor.com.br
cordepot.com
topdecor.pl
optcoder.com
codertop.com
protodec.com
topdecor.eu
decortop.com
tcodepro.com
codeport.org
topdecor.ca
portcode.com
topdecor.gr
decorpot.com
topdecor.be
topdecor.net
prodotec.es
topdecor.vn
topdecor.co.za
potdecor.com
topdecor.lt
petrodoc.com

DNS History

52 records (8 active, 44 former)

20162017201820192020202120222023202420252026NSns-1435.awsdns-51.orgns-1916.awsdns-47.co.ukns-32.awsdns-04.comns-677.awsdns-20.netMXtopcoder-com.mail.protection.outlook.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comA3.95.84.8254.156.153.20154.83.41.124100.24.142.200100.51.130.21100.51.183.22113.217.63.25513.219.160.25518.209.225.1763.217.30.1853.218.109.413.226.79.803.227.152.853.231.253.1673.234.5.1753.91.126.16134.198.248.19134.202.212.14734.225.153.2134.231.33.7034.239.72.17635.169.159.23835.170.0.6044.198.201.19444.215.157.11044.216.163.16444.219.79.4144.221.13.22050.16.157.13550.17.230.22952.0.16.11752.20.93.2252.72.193.1654.158.161.554.161.238.24054.205.44.2554.208.25.24954.235.210.24554.85.218.5554.86.103.5354.87.173.5198.95.30.100
●NSns-1435.awsdns-51.org2015-08-28 → 2026-04-24 · 2 obs
● 2015-08-28 23:28:24
● 2026-04-24 00:07:54
●NSns-1916.awsdns-47.co.uk2015-08-28 → 2026-04-24 · 2 obs
● 2015-08-28 23:28:24
● 2026-04-24 00:07:54
●NSns-32.awsdns-04.com2015-08-28 → 2026-04-24 · 2 obs
● 2015-08-28 23:28:24
● 2026-04-24 00:07:54
●NSns-677.awsdns-20.net2015-08-28 → 2026-04-24 · 2 obs
● 2015-08-28 23:28:24
● 2026-04-24 00:07:54
○MXalt1.aspmx.l.google.com2015-08-28 → 2021-06-24 · 4 obs
● 2015-08-28 23:28:24
● 2021-06-24 23:30:00
○ 2026-02-15 23:05:16
○ 2026-04-24 00:07:54
○MXalt2.aspmx.l.google.com2015-08-28 → 2021-06-24 · 4 obs
● 2015-08-28 23:28:24
● 2021-06-24 23:30:00
○ 2026-02-15 23:05:16
○ 2026-04-24 00:07:54
○MXaspmx.l.google.com2015-08-28 → 2021-06-24 · 4 obs
● 2015-08-28 23:28:24
● 2021-06-24 23:30:00
○ 2026-02-15 23:05:16
○ 2026-04-24 00:07:54
○MXaspmx2.googlemail.com2015-08-28 → 2021-06-24 · 4 obs
● 2015-08-28 23:28:24
● 2021-06-24 23:30:00
○ 2026-02-15 23:05:16
○ 2026-04-24 00:07:54
○MXaspmx3.googlemail.com2015-08-28 → 2021-06-24 · 4 obs
● 2015-08-28 23:28:24
● 2021-06-24 23:30:00
○ 2026-02-15 23:05:16
○ 2026-04-24 00:07:54
●MXtopcoder-com.mail.protection.outlook.com2026-02-15 → 2026-04-24 · 3 obs
○ 2021-06-24 23:30:00
● 2026-02-15 23:05:16
● 2026-04-24 00:07:54
○A100.24.142.2002026-02-15 → 2026-04-24 · 2 obs
○ 2026-02-15 23:05:16
○ 2026-04-24 00:07:54
○A100.51.130.212026-03-27 → 2026-03-27 · 4 obs
○ 2026-03-27 11:19:26
● 2026-03-27 13:29:38
○ 2026-03-30 16:58:30
○ 2026-04-24 00:07:54
○A100.51.183.2212026-04-06 → 2026-04-06 · 4 obs
○ 2026-03-30 16:58:30
● 2026-04-06 10:33:28
○ 2026-04-09 08:57:18
○ 2026-04-24 00:07:54
○A13.217.63.2552026-03-27 → 2026-03-27 · 4 obs
○ 2026-03-27 11:19:26
● 2026-03-27 13:29:38
○ 2026-03-30 16:58:30
○ 2026-04-24 00:07:54
○A13.219.160.2552026-03-01 → 2026-03-01 · 4 obs
○ 2026-02-17 12:39:16
● 2026-03-01 07:08:44
○ 2026-03-25 05:38:28
○ 2026-04-24 00:07:54
○A18.209.225.1762026-03-26 → 2026-03-27 · 5 obs
○ 2026-03-25 05:38:28
● 2026-03-26 11:22:08
● 2026-03-27 11:19:26
○ 2026-03-27 13:29:38
○ 2026-04-24 00:07:54
○A3.217.30.1852021-06-24 → 2021-06-24 · 4 obs
○ 2017-06-11 13:07:06
● 2021-06-24 23:30:00
○ 2026-02-15 23:05:16
○ 2026-04-24 00:07:54
○A3.218.109.412026-03-01 → 2026-03-01 · 4 obs
○ 2026-02-17 12:39:16
● 2026-03-01 07:08:44
○ 2026-03-25 05:38:28
○ 2026-04-24 00:07:54
○A3.226.79.802026-04-12 → 2026-04-15 · 5 obs
○ 2026-04-09 10:59:10
● 2026-04-12 16:48:30
● 2026-04-15 04:57:50
○ 2026-04-19 22:24:42
○ 2026-04-24 00:07:54
○A3.227.152.852026-04-09 → 2026-04-09 · 4 obs
○ 2026-04-06 10:33:28
● 2026-04-09 08:57:18
○ 2026-04-09 10:59:10
○ 2026-04-24 00:07:54
○A3.231.253.1672026-03-27 → 2026-03-27 · 4 obs
○ 2026-03-27 11:19:26
● 2026-03-27 13:29:38
○ 2026-03-30 16:58:30
○ 2026-04-24 00:07:54
○A3.234.5.1752026-04-09 → 2026-04-09 · 4 obs
○ 2026-04-09 08:57:18
● 2026-04-09 10:59:10
○ 2026-04-12 16:48:30
○ 2026-04-24 00:07:54
○A3.91.126.1612026-04-19 → 2026-04-19 · 4 obs
○ 2026-04-15 04:57:50
● 2026-04-19 22:24:42
○ 2026-04-24 00:07:52
○ 2026-04-24 00:07:54
●A3.95.84.822026-04-24 → 2026-04-24 · 3 obs
○ 2026-04-19 22:24:42
● 2026-04-24 00:07:52
● 2026-04-24 00:07:54
○A34.198.248.1912026-03-01 → 2026-03-01 · 4 obs
○ 2026-02-17 12:39:16
● 2026-03-01 07:08:44
○ 2026-03-25 05:38:28
○ 2026-04-24 00:07:54
○A34.202.212.1472021-06-24 → 2021-06-24 · 4 obs
○ 2017-06-11 13:07:06
● 2021-06-24 23:30:00
○ 2026-02-15 23:05:16
○ 2026-04-24 00:07:54
○A34.225.153.212026-04-06 → 2026-04-06 · 4 obs
○ 2026-03-30 16:58:30
● 2026-04-06 10:33:28
○ 2026-04-09 08:57:18
○ 2026-04-24 00:07:54
○A34.231.33.702026-04-12 → 2026-04-15 · 5 obs
○ 2026-04-09 10:59:10
● 2026-04-12 16:48:30
● 2026-04-15 04:57:50
○ 2026-04-19 22:24:42
○ 2026-04-24 00:07:54
○A34.239.72.1762026-02-15 → 2026-02-17 · 5 obs
○ 2021-06-24 23:30:00
● 2026-02-15 23:05:16
● 2026-02-17 12:39:16
○ 2026-03-01 07:08:44
○ 2026-04-24 00:07:54
○A35.169.159.2382026-02-15 → 2026-04-24 · 2 obs
○ 2026-02-15 23:05:16
○ 2026-04-24 00:07:54
○A35.170.0.602026-03-30 → 2026-03-30 · 4 obs
○ 2026-03-27 13:29:38
● 2026-03-30 16:58:30
○ 2026-04-06 10:33:28
○ 2026-04-24 00:07:54
○A44.198.201.1942026-04-19 → 2026-04-19 · 4 obs
○ 2026-04-15 04:57:50
● 2026-04-19 22:24:42
○ 2026-04-24 00:07:52
○ 2026-04-24 00:07:54
○A44.215.157.1102026-02-15 → 2026-02-17 · 5 obs
○ 2021-06-24 23:30:00
● 2026-02-15 23:05:16
● 2026-02-17 12:39:16
○ 2026-03-01 07:08:44
○ 2026-04-24 00:07:54
○A44.216.163.1642026-04-09 → 2026-04-09 · 4 obs
○ 2026-04-09 08:57:18
● 2026-04-09 10:59:10
○ 2026-04-12 16:48:30
○ 2026-04-24 00:07:54
○A44.219.79.412026-04-09 → 2026-04-09 · 4 obs
○ 2026-04-06 10:33:28
● 2026-04-09 08:57:18
○ 2026-04-09 10:59:10
○ 2026-04-24 00:07:54
○A44.221.13.2202026-04-15 → 2026-04-15 · 4 obs
○ 2026-04-12 16:48:30
● 2026-04-15 04:57:50
○ 2026-04-19 22:24:42
○ 2026-04-24 00:07:54
○A50.16.157.1352026-04-06 → 2026-04-06 · 4 obs
○ 2026-03-30 16:58:30
● 2026-04-06 10:33:28
○ 2026-04-09 08:57:18
○ 2026-04-24 00:07:54
○A50.17.230.2292026-03-30 → 2026-03-30 · 4 obs
○ 2026-03-27 13:29:38
● 2026-03-30 16:58:30
○ 2026-04-06 10:33:28
○ 2026-04-24 00:07:54
○A52.0.16.1172026-03-25 → 2026-03-26 · 5 obs
○ 2026-03-01 07:08:44
● 2026-03-25 05:38:28
● 2026-03-26 11:22:08
○ 2026-03-27 11:19:26
○ 2026-04-24 00:07:54
○A52.20.93.222026-03-25 → 2026-03-25 · 4 obs
○ 2026-03-01 07:08:44
● 2026-03-25 05:38:28
○ 2026-03-26 11:22:08
○ 2026-04-24 00:07:54
○A52.72.193.162026-02-15 → 2026-02-17 · 5 obs
○ 2021-06-24 23:30:00
● 2026-02-15 23:05:16
● 2026-02-17 12:39:16
○ 2026-03-01 07:08:44
○ 2026-04-24 00:07:54
●A54.156.153.2012026-04-24 → 2026-04-24 · 3 obs
○ 2026-04-19 22:24:42
● 2026-04-24 00:07:52
● 2026-04-24 00:07:54
○A54.158.161.52026-02-15 → 2026-04-24 · 2 obs
○ 2026-02-15 23:05:16
○ 2026-04-24 00:07:54
○A54.161.238.2402026-04-09 → 2026-04-09 · 4 obs
○ 2026-04-09 08:57:18
● 2026-04-09 10:59:10
○ 2026-04-12 16:48:30
○ 2026-04-24 00:07:54
○A54.205.44.252026-04-19 → 2026-04-19 · 4 obs
○ 2026-04-15 04:57:50
● 2026-04-19 22:24:42
○ 2026-04-24 00:07:52
○ 2026-04-24 00:07:54
○A54.208.25.2492026-04-09 → 2026-04-09 · 4 obs
○ 2026-04-06 10:33:28
● 2026-04-09 08:57:18
○ 2026-04-09 10:59:10
○ 2026-04-24 00:07:54
○A54.235.210.2452026-04-12 → 2026-04-12 · 4 obs
○ 2026-04-09 10:59:10
● 2026-04-12 16:48:30
○ 2026-04-15 04:57:50
○ 2026-04-24 00:07:54
●A54.83.41.1242026-04-24 → 2026-04-24 · 3 obs
○ 2026-04-19 22:24:42
● 2026-04-24 00:07:52
● 2026-04-24 00:07:54
○A54.85.218.552015-08-28 → 2017-06-11 · 4 obs
● 2015-08-28 23:28:24
● 2017-06-11 13:07:06
○ 2021-06-24 23:30:00
○ 2026-04-24 00:07:54
○A54.86.103.532026-03-30 → 2026-03-30 · 4 obs
○ 2026-03-27 13:29:38
● 2026-03-30 16:58:30
○ 2026-04-06 10:33:28
○ 2026-04-24 00:07:54
○A54.87.173.512026-03-27 → 2026-03-27 · 4 obs
○ 2026-03-26 11:22:08
● 2026-03-27 11:19:26
○ 2026-03-27 13:29:38
○ 2026-04-24 00:07:54
○A98.95.30.1002026-03-25 → 2026-03-27 · 5 obs
○ 2026-03-01 07:08:44
● 2026-03-25 05:38:28
● 2026-03-27 11:19:26
○ 2026-03-27 13:29:38
○ 2026-04-24 00:07:54

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
topcoder.comns-32.awsdns-04.com, ns-677.awsdns-20.net, ns-1916.awsdns-47.co.uk, ns-1435.awsdns-51.org2 records

✅ Authoritative Response

Server:205.251.199.124

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: 567ms | Queries: -

📄 Records

TypeCountSample Data
A354.156.153.201, 3.95.84.82...
NS4ns-1435.awsdns-51.org, ns-1916.awsdns-47.co.uk...
MX1topcoder-com.mail.protection.outlook.com
TXT19MS=ms20073706, MS=ms23759231...
SOA1ns-1916.awsdns-47.co.uk awsdns-hostmaste

📌 Glue Records Collected

Total: 2

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

Analysis

Hierarchy

topcoder.com is a parent of arena.topcoder.com, accounts.topcoder.com, topgear.topcoder.com, archive.topcoder.com, community.topcoder.com and several other host names.

IP Addresses

Three IP numbers are pointed to by topcoder.com: 3.95.84.82, 54.83.41.124 and 54.156.153.201.

Other host names such as 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 topcoder.com.

Name Servers

topcoder.com is delegated to four name servers: ns-32.awsdns-04.com, ns-677.awsdns-20.net, ns-1435.awsdns-51.org and ns-1916.awsdns-47.co.uk.

topcoder.com at least partially shares name servers with other domains, for instance hellointerview.com, sterlingsilverartofbeef.com, zagg.to, awsperiodictable.com and mobileweblocal.com.

these name servers are commonly used with ns-213.awsdns-26.com, ns-1065.awsdns-05.org and ns-1910.awsdns-46.co.uk.

Host names with two IP numbers:

ns-32.awsdns-04.com points to: 2600:9000:5300:2000::1 and 205.251.192.32.

ns-677.awsdns-20.net points to: 2600:9000:5302:a500::1 and 205.251.194.165.

ns-1435.awsdns-51.org points to: 2600:9000:5305:9b00::1 and 205.251.197.155.

ns-1916.awsdns-47.co.uk points to: 2600:9000:5307:7c00::1 and 205.251.199.124.

Mail Servers

topcoder.com is handled by a single mail server, topcoder-com.mail.protection.outlook.com.

Host topcoder-com.mail.protection.outlook.com points to three IPs: 52.101.124.117, 52.101.137.0 and 52.101.157.80.