symcd.com - dns.ninja

symcd.com

DNSSEC⚠️ Not signed
NSns20.digicertdns.com ⭐
A2600:1800:10::1:1f🇺🇸 Tiggee2600:1800:10::/48 DNS Made Easy anycast network
PTRns20.digicertdns.com
A208.94.148.223🇺🇸 Tiggee208.94.148.0/24 DNS Made Easy anycast network
PTRns20.digicertdns.com
NSns21.digicertdns.com
A2600:1801:11::1:1f🇺🇸 Tiggee2600:1801:11::/48 DNS Made Easy anycast network
PTRns21.digicertdns.com
A208.80.124.223🇺🇸 Tiggee208.80.124.0/24 DNS Made Easy anycast network
PTRns21.digicertdns.com
NSns22.digicertdns.com
A2600:1802:12::1:1f🇺🇸 Tiggee2600:1802:12::/48 DNS Made Easy anycast network
PTRns22.digicertdns.com
A208.80.126.223🇺🇸 Tiggee208.80.126.0/24 DNS Made Easy anycast network
PTRns22.digicertdns.com
NSns23.digicertdns.net
A2600:1801:13::1:1f🇺🇸 Tiggee2600:1801:13::/48 DNS Made Easy anycast network
PTRns23.digicertdns.net
A208.80.125.223🇺🇸 Tiggee208.80.125.0/24 DNS Made Easy anycast network
PTRns23.digicertdns.net
NSns24.digicertdns.net
A2600:1802:14::1:1f🇺🇸 Tiggee2600:1802:14::/48 DNS Made Easy anycast network
PTRns24.digicertdns.net
A208.80.127.223🇺🇸 Tiggee208.80.127.0/24 DNS Made Easy anycast network
PTRns24.digicertdns.net
NSns25.digicertdns.net
A2600:1800:15::1:1f🇺🇸 Tiggee2600:1800:15::/48 DNS Made Easy anycast network
PTRns25.digicertdns.net
A208.94.149.223🇺🇸 Tiggee208.94.149.0/24 DNS Made Easy anycast network
PTRns25.digicertdns.net
NSpdns196.ultradns.biz
A2610:a1:1015::e8🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar
PTRpdns196.ultradns.biz
A156.154.66.196🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar
PTRpdns196.ultradns.biz
NSpdns196.ultradns.com
A2001:502:f3ff::e8🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar
PTRpdns196.ultradns.com
A156.154.64.196🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar
PTRpdns196.ultradns.com
NSpdns196.ultradns.net
A2610:a1:1014::e8🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar
PTRpdns196.ultradns.net
A156.154.65.196🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar
PTRpdns196.ultradns.net
NSpdns196.ultradns.org
A2001:502:4612::e8🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar
PTRpdns196.ultradns.org
A156.154.67.196🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar
PTRpdns196.ultradns.org
SOAns20.digicertdns.comdns@digicertdns.com 2009-01-02 #76

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=1786434154
📈 Tranco rank: #3,608

DigiCert PKI Infrastructure Domain

symcd.com is a critical Public Key Infrastructure (PKI) domain operated by DigiCert, one of the world's largest Certificate Authorities. The domain name derives from "Symantec Certificate Distribution" — a legacy from Symantec's Website Security business, which DigiCert acquired in 2017.

Purpose

This domain serves as infrastructure for SSL/TLS certificate validation services:

  • OCSP Responders — Online Certificate Status Protocol endpoints (e.g., s.symcd.com) that allow browsers to verify if a certificate has been revoked in real-time
  • CRL Distribution — Certificate Revocation List hosting for certificates that need offline revocation checking
  • Certificate Chains — Intermediate certificate distribution for trust chain validation

The domain's high traffic rank (Tranco #3,681) reflects its role in billions of daily certificate validation requests from web browsers worldwide.

DNS Infrastructure

  • Authoritative Nameservers: Redundant configuration using both UltraDNS (pdns196.ultradns.) and DigiCert's own DNS infrastructure (ns20-25.digicertdns.)
  • Primary Contact: dns@digicertdns.com
  • Subdomains: 52+ including s.symcd.com (OCSP), g.symcd.com, tc.symcd.com
  • DNSSEC: Not enabled
  • IPv4/IPv6: Dual-stack support on all nameservers

Technical Notes

The domain itself does not host a website — it exists purely for PKI operations. Subdomains like s.symcd.com resolve to DigiCert's OCSP infrastructure (pki-ocsp.digicert.com), handling certificate status queries for millions of Symantec-legacy and DigiCert-issued certificates still in use across the internet.

Subdomains

s.symcd.com
g.symcd.com
tc.symcd.com
so.symcd.com
rd.symcd.com
rb.symcd.com
tn.symcd.com
sc.symcd.com
gv.symcd.com
tf.symcd.com
sx.symcd.com
ss.symcd.com
tg.symcd.com
sg.symcd.com
sb.symcd.com
gk.symcd.com
st.symcd.com
gj.symcd.com
sv.symcd.com
sy.symcd.com
gy.symcd.com
rc.symcd.com
fr.symcd.com
sr.symcd.com
sn.symcd.com
sa.symcd.com
ti.symcd.com
rh.symcd.com
sf.symcd.com
rm.symcd.com
se.symcd.com
tb.symcd.com
to.symcd.com
ea.symcd.com
gn.symcd.com
hd.symcd.com
gq.symcd.com
tj.symcd.com
sd.symcd.com
gm.symcd.com
ro.symcd.com
su.symcd.com
sw.symcd.com
gb.symcd.com
th.symcd.com
gt.symcd.com
sh.symcd.com
ga.symcd.com
tk.symcd.com
gs.symcd.com
gp.symcd.com
gu.symcd.com
gl.symcd.com
sm.symcd.com
tl.symcd.com
t.symcd.com
gw.symcd.com
gr.symcd.com
hc.symcd.com
ha.symcd.com
gz.symcd.com
ta.symcd.com

Same first word

symcd.com

Similar names

mdcsy.com
mycsd.de
cydms.org
mydcs.org
mydcs.gr
myscd.gov.zm
sdcym.com
dcsmy.com
mcdys.com
ydcms.com
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mysdc.com
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ycsmd.com
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mydsc.de
dycms.com
ydmcs.com
cdmys.cn
scdmy.com
dyscm.com
myscd.com
sdmcy.com
ydscm.com
mydsc.us
mycds.com
ymsdc.ru
dcmsy.com
sycmd.com
cdmys.com
msdyc.com
mydsc.com
symdc.com
mycsd.net
sdcmy.cn
msdcy.com
dycsm.cn
mysdc.net
mysdc.com.cn
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mydcs.net
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cdmsy.cn
dcyms.com
mycds.it
mycds.org
sdycm.com
dcmys.kr
dymcs.dynalias.net
dycsm.com
dcsmy.cn
sydmc.com
dmscy.com
cymds.com
cydms.com
csmyd.com
mydcs.com
mcsyd.dk

DNS History

26 records (10 active, 16 former)

20162017201820192020202120222023202420252026NSns20.digicertdns.comns21.digicertdns.comns22.digicertdns.comns23.digicertdns.netns24.digicertdns.netns25.digicertdns.netpdns196.ultradns.bizpdns196.ultradns.compdns196.ultradns.netpdns196.ultradns.orga1.verisigndns.coma2.verisigndns.coma3.verisigndns.comns1.p03.dynect.netns10.dnsmadeeasy.comns11.dnsmadeeasy.comns12.dnsmadeeasy.comns13.dnsmadeeasy.comns14.dnsmadeeasy.comns15.dnsmadeeasy.comns2.p03.dynect.netns3.p03.dynect.netns4.p03.dynect.netu1.verisigndns.comu2.verisigndns.comu3.verisigndns.com
○NSa1.verisigndns.com2015-05-19 → 2019-07-02 · 4 obs
● 2015-05-19 21:44:34
● 2019-07-02 05:50:26
○ 2019-09-21 07:31:58
○ 2026-08-11 07:54:00
○NSa2.verisigndns.com2015-05-19 → 2019-07-02 · 4 obs
● 2015-05-19 21:44:34
● 2019-07-02 05:50:26
○ 2019-09-21 07:31:58
○ 2026-08-11 07:54:00
○NSa3.verisigndns.com2015-05-19 → 2019-07-02 · 4 obs
● 2015-05-19 21:44:34
● 2019-07-02 05:50:26
○ 2019-09-21 07:31:58
○ 2026-08-11 07:54:00
○NSns1.p03.dynect.net2019-09-21 → 2021-07-10 · 16 obs
○ 2019-07-02 05:50:26
● 2019-09-21 07:31:58
○ 2019-10-15 05:15:08
● 2019-10-29 16:26:46
● 2019-12-10 15:44:20
○ 2020-02-14 12:13:02
● 2020-03-18 11:48:34
○ 2020-03-26 13:22:14
○ 2020-03-27 20:26:44
● 2020-05-26 22:14:06
● 2020-11-09 10:14:38
○ 2020-12-15 19:39:12
● 2020-12-18 17:20:24
● 2021-07-10 04:07:12
○ 2026-02-16 16:36:28
○ 2026-08-11 07:54:00
○NSns10.dnsmadeeasy.com2019-09-21 → 2021-07-10 · 18 obs
○ 2019-07-02 05:50:26
● 2019-09-21 07:31:58
● 2019-10-29 16:26:46
○ 2019-12-10 15:44:20
● 2020-02-14 12:13:02
○ 2020-03-18 11:48:34
● 2020-03-26 13:22:14
● 2020-03-27 20:26:44
○ 2020-05-26 22:14:06
● 2020-06-10 00:04:42
● 2020-10-14 19:19:58
○ 2020-11-09 10:14:38
● 2020-12-15 19:39:12
● 2020-12-18 17:20:24
○ 2021-03-03 06:25:52
● 2021-07-10 04:07:12
○ 2026-02-16 16:36:28
○ 2026-08-11 07:54:00
○NSns11.dnsmadeeasy.com2019-10-15 → 2020-12-18 · 14 obs
○ 2019-09-21 07:31:58
● 2019-10-15 05:15:08
○ 2019-10-29 16:26:46
○ 2019-12-10 15:44:20
● 2020-02-14 12:13:02
● 2020-03-27 20:26:44
○ 2020-05-26 22:14:06
● 2020-06-10 00:04:42
○ 2020-10-14 19:19:58
○ 2020-11-09 10:14:38
● 2020-12-15 19:39:12
● 2020-12-18 17:20:24
○ 2021-03-03 06:25:52
○ 2026-08-11 07:54:00
○NSns12.dnsmadeeasy.com2019-10-15 → 2020-12-18 · 14 obs
○ 2019-09-21 07:31:58
● 2019-10-15 05:15:08
○ 2019-10-29 16:26:46
○ 2019-12-10 15:44:20
● 2020-02-14 12:13:02
● 2020-03-27 20:26:44
○ 2020-05-26 22:14:06
● 2020-06-10 00:04:42
○ 2020-10-14 19:19:58
○ 2020-11-09 10:14:38
● 2020-12-15 19:39:12
● 2020-12-18 17:20:24
○ 2021-03-03 06:25:52
○ 2026-08-11 07:54:00
○NSns13.dnsmadeeasy.com2019-10-15 → 2020-12-18 · 14 obs
○ 2019-09-21 07:31:58
● 2019-10-15 05:15:08
○ 2019-10-29 16:26:46
○ 2019-12-10 15:44:20
● 2020-02-14 12:13:02
● 2020-03-27 20:26:44
○ 2020-05-26 22:14:06
● 2020-06-10 00:04:42
○ 2020-10-14 19:19:58
○ 2020-11-09 10:14:38
● 2020-12-15 19:39:12
● 2020-12-18 17:20:24
○ 2021-03-03 06:25:52
○ 2026-08-11 07:54:00
○NSns14.dnsmadeeasy.com2019-10-15 → 2020-12-18 · 14 obs
○ 2019-09-21 07:31:58
● 2019-10-15 05:15:08
○ 2019-10-29 16:26:46
○ 2019-12-10 15:44:20
● 2020-02-14 12:13:02
● 2020-03-27 20:26:44
○ 2020-05-26 22:14:06
● 2020-06-10 00:04:42
○ 2020-10-14 19:19:58
○ 2020-11-09 10:14:38
● 2020-12-15 19:39:12
● 2020-12-18 17:20:24
○ 2021-03-03 06:25:52
○ 2026-08-11 07:54:00
○NSns15.dnsmadeeasy.com2019-10-15 → 2020-12-18 · 14 obs
○ 2019-09-21 07:31:58
● 2019-10-15 05:15:08
○ 2019-10-29 16:26:46
○ 2019-12-10 15:44:20
● 2020-02-14 12:13:02
● 2020-03-27 20:26:44
○ 2020-05-26 22:14:06
● 2020-06-10 00:04:42
○ 2020-10-14 19:19:58
○ 2020-11-09 10:14:38
● 2020-12-15 19:39:12
● 2020-12-18 17:20:24
○ 2021-03-03 06:25:52
○ 2026-08-11 07:54:00
○NSns2.p03.dynect.net2019-09-21 → 2021-07-10 · 17 obs
○ 2019-07-02 05:50:26
● 2019-09-21 07:31:58
○ 2019-10-15 05:15:08
● 2019-10-29 16:26:46
● 2019-12-10 15:44:20
○ 2020-02-14 12:13:02
○ 2020-03-27 20:26:44
● 2020-05-26 22:14:06
○ 2020-06-10 00:04:42
● 2020-10-14 19:19:58
● 2020-11-09 10:14:38
○ 2020-12-15 19:39:12
○ 2020-12-18 17:20:24
● 2021-03-03 06:25:52
● 2021-07-10 04:07:12
○ 2026-02-16 16:36:28
○ 2026-08-11 07:54:00
●NSns20.digicertdns.com2026-02-16 → 2026-08-11 · 3 obs
○ 2021-07-10 04:07:12
● 2026-02-16 16:36:28
● 2026-08-11 07:54:00
●NSns21.digicertdns.com2026-02-16 → 2026-08-11 · 3 obs
○ 2021-07-10 04:07:12
● 2026-02-16 16:36:28
● 2026-08-11 07:54:00
●NSns22.digicertdns.com2026-02-16 → 2026-08-11 · 3 obs
○ 2021-07-10 04:07:12
● 2026-02-16 16:36:28
● 2026-08-11 07:54:00
●NSns23.digicertdns.net2026-02-16 → 2026-08-11 · 3 obs
○ 2021-07-10 04:07:12
● 2026-02-16 16:36:28
● 2026-08-11 07:54:00
●NSns24.digicertdns.net2026-02-16 → 2026-08-11 · 3 obs
○ 2021-07-10 04:07:12
● 2026-02-16 16:36:28
● 2026-08-11 07:54:00
●NSns25.digicertdns.net2026-02-16 → 2026-08-11 · 3 obs
○ 2021-07-10 04:07:12
● 2026-02-16 16:36:28
● 2026-08-11 07:54:00
○NSns3.p03.dynect.net2019-09-21 → 2021-07-10 · 17 obs
○ 2019-07-02 05:50:26
● 2019-09-21 07:31:58
○ 2019-10-15 05:15:08
● 2019-10-29 16:26:46
● 2019-12-10 15:44:20
○ 2020-02-14 12:13:02
○ 2020-03-27 20:26:44
● 2020-05-26 22:14:06
○ 2020-06-10 00:04:42
● 2020-10-14 19:19:58
● 2020-11-09 10:14:38
○ 2020-12-15 19:39:12
○ 2020-12-18 17:20:24
● 2021-03-03 06:25:52
● 2021-07-10 04:07:12
○ 2026-02-16 16:36:28
○ 2026-08-11 07:54:00
○NSns4.p03.dynect.net2019-09-21 → 2021-07-10 · 17 obs
○ 2019-07-02 05:50:26
● 2019-09-21 07:31:58
○ 2019-10-15 05:15:08
● 2019-10-29 16:26:46
● 2019-12-10 15:44:20
○ 2020-02-14 12:13:02
○ 2020-03-27 20:26:44
● 2020-05-26 22:14:06
○ 2020-06-10 00:04:42
● 2020-10-14 19:19:58
● 2020-11-09 10:14:38
○ 2020-12-15 19:39:12
○ 2020-12-18 17:20:24
● 2021-03-03 06:25:52
● 2021-07-10 04:07:12
○ 2026-02-16 16:36:28
○ 2026-08-11 07:54:00
●NSpdns196.ultradns.biz2026-02-16 → 2026-08-11 · 3 obs
○ 2021-07-10 04:07:12
● 2026-02-16 16:36:28
● 2026-08-11 07:54:00
●NSpdns196.ultradns.com2026-02-16 → 2026-08-11 · 3 obs
○ 2021-07-10 04:07:12
● 2026-02-16 16:36:28
● 2026-08-11 07:54:00
●NSpdns196.ultradns.net2026-02-16 → 2026-08-11 · 3 obs
○ 2021-07-10 04:07:12
● 2026-02-16 16:36:28
● 2026-08-11 07:54:00
●NSpdns196.ultradns.org2026-02-16 → 2026-08-11 · 3 obs
○ 2021-07-10 04:07:12
● 2026-02-16 16:36:28
● 2026-08-11 07:54:00
○NSu1.verisigndns.com2015-05-19 → 2019-07-02 · 4 obs
● 2015-05-19 21:44:34
● 2019-07-02 05:50:26
○ 2019-09-21 07:31:58
○ 2026-08-11 07:54:00
○NSu2.verisigndns.com2015-05-19 → 2019-07-02 · 4 obs
● 2015-05-19 21:44:34
● 2019-07-02 05:50:26
○ 2019-09-21 07:31:58
○ 2026-08-11 07:54:00
○NSu3.verisigndns.com2015-05-19 → 2019-07-02 · 4 obs
● 2015-05-19 21:44:34
● 2019-07-02 05:50:26
○ 2019-09-21 07:31:58
○ 2026-08-11 07:54:00

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comb.gtld-servers.net, d.gtld-servers.net, c.gtld-servers.net, m.gtld-servers.net...-
symcd.compdns196.ultradns.com, pdns196.ultradns.net, pdns196.ultradns.org, pdns196.ultradns.biz...8 records

✅ Authoritative Response

Server:208.80.126.223

NS records: pdns196.ultradns.com, pdns196.ultradns.net, pdns196.ultradns.org, pdns196.ultradns.biz, ns20.digicertdns.com, ns21.digicertdns.com, ns22.digicertdns.com, ns24.digicertdns.net, ns25.digicertdns.net, ns23.digicertdns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for symcd.com (unsigned zone)

⏱️ Timing

Total: 2167ms | Queries: -

📄 Records

TypeCountSample Data
NS10ns20.digicertdns.com, ns21.digicertdns.com...
SOA1ns20.digicertdns.com dns.digicertdns.com

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (pdns196.ultradns.com, pdns196.ultradns.com, ns20.digicertdns.com...)

Analysis

Hierarchy

The host names s.symcd.com, g.symcd.com, tc.symcd.com, so.symcd.com and rd.symcd.com — among a few others — fall under the parent domain symcd.com.

Name Servers

The DNS delegation for symcd.com covers 10 name servers: pdns196.ultradns.biz, ns20.digicertdns.com, ns21.digicertdns.com and 7 more.

At least some of symcd.com's name servers are shared with other domains, for example ns1.cyberspacedesign.com, fleetfeetcincy.com, alrc.gov.au and two more.

These name servers tend to co-occur with ns22.digicertdns.com, ns23.digicertdns.net, ns24.digicertdns.net and 7 other name servers in the same DNS delegations.

Hostnames that resolve to two IP addresses:

pdns196.ultradns.biz maps to two IP addresses — 156.154.66.196 and 2610:a1:1015::e8.

ns20.digicertdns.com maps to two IP addresses — 208.94.148.223 and 2600:1800:10::1:1f.

ns21.digicertdns.com maps to two IP addresses — 208.80.124.223 and 2600:1801:11::1:1f.

ns22.digicertdns.com maps to two IP addresses — 208.80.126.223 and 2600:1802:12::1:1f.

pdns196.ultradns.com maps to two IP addresses — 156.154.64.196 and 2001:502:f3ff::e8.

ns23.digicertdns.net maps to two IP addresses — 208.80.125.223 and 2600:1801:13::1:1f.

ns24.digicertdns.net maps to two IP addresses — 208.80.127.223 and 2600:1802:14::1:1f.

ns25.digicertdns.net maps to two IP addresses — 208.94.149.223 and 2600:1800:15::1:1f.

pdns196.ultradns.net maps to two IP addresses — 156.154.65.196 and 2610:a1:1014::e8.

pdns196.ultradns.org maps to two IP addresses — 156.154.67.196 and 2001:502:4612::e8.