`jcell.org`

DNSSEC	⚠️ Not signed
A	131.215.148.33^{🇺🇸 CALIT131.215.0.0/16 Caltech}
		PTR	`deep.cambia.caltech.edu`
NS	`mercutio.ni.caltech.edu` ⭐
		A	131.215.254.99^{🇺🇸 CALIT131.215.0.0/16 Caltech}
			PTR	`mercutio.ni.caltech.edu`
NS	`tepid.ni.caltech.edu`
		A	131.215.254.97^{🇺🇸 CALIT131.215.0.0/16 Caltech}
			PTR	`tepid.ni.caltech.edu`
SOA	`mercutio.ni.caltech.edu`hostmaster@caltech.edu serial=15

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1778795157

Same first word

jcell.org

jcell.tempurl.host

jcell.com

Similar names

jellc.org

DNS History

4 records (3 active, 1 former)

●NSmercutio.ni.caltech.edu2026-04-12 → 2026-05-14 · 2 obs

● 2026-04-12 09:53:38
● 2026-05-14 22:02:50

●NStepid.ni.caltech.edu2026-04-12 → 2026-05-14 · 2 obs

● 2026-04-12 09:53:38
● 2026-05-14 22:02:50

●A131.215.148.332026-04-12 → 2026-05-14 · 3 obs

○ 2015-12-08 22:07:18
● 2026-04-12 09:53:38
● 2026-05-14 22:02:50

○A74.220.199.62015-07-05 → 2015-10-09 · 4 obs

● 2015-07-05 18:15:28
● 2015-10-09 05:31:36
○ 2015-12-08 22:07:18
○ 2026-05-14 22:02:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org	-
jcell.org	tepid.ni.caltech.edu, mercutio.ni.caltech.edu	-

✅ Authoritative Response

Server:131.215.254.97

NS records: tepid.ni.caltech.edu, mercutio.ni.caltech.edu

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for jcell.org (unsigned zone)

⏱️ Timing

Total: 416ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`131.215.148.33`
NS	2	`tepid.ni.caltech.edu, mercutio.ni.caltech.edu`
SOA	1	`mercutio.ni.caltech.edu hostmaster.calte`

Analysis

IP Addresses

jcell.org resolves to a single IP: 131.215.148.33.

Other host names share IP numbers with jcell.org; for instance deep.cambia.caltech.edu.

Name Servers

jcell.org has two name servers: mercutio.ni.caltech.edu and tepid.ni.caltech.edu.

jcell.org shares the same name server setup as other domains, for example scsn.org, tedxcaltech.net, tedxcaltech.com, friendsofpalomarobservatory.org and palomar-observatory.org.

jcell.org shares some name servers with other domains, for example ligo.org, mmarray.org, 142.215.131.in-addr.arpa, gw-osc.org and ligo.caltech.edu.

These name servers are commonly paired with ligo.ligo.caltech.edu, xerxes.cms.caltech.edu, amestris.cms.caltech.edu, ovro.ovro.caltech.edu, ns1.ligo-la.caltech.edu, ns1.ligo-wa.caltech.edu and ns1.mmarray.org.

Host names with a single IP:

mercutio.ni.caltech.edu points to 131.215.254.99

tepid.ni.caltech.edu points to 131.215.254.97

jcell.org - robtex.com

jcell.org

org