`arecibo.inter.edu`

DNSSEC	⚠️ Not signed
A	173.201.74.27^{🇺🇸 GODADDY-DNS173.201.74.0/23}
		PTR	`ns54.domaincontrol.com`
NS	`ns1-38.azure-dns.com` ⭐
		A	2603:1061:0:10::26^{🇺🇸 Microsoft2603:1000::/25 MICROSOFT}
			PTR	`ns1-38.azure-dns.com`
		A	150.171.10.38^{🇺🇸 Microsoft150.171.0.0/16 MICROSOFT}
			PTR	`ns1-38.azure-dns.com`
NS	`ns2-38.azure-dns.net`
		A	2620:1ec:8ec:10::26^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns2-38.azure-dns.net`
		A	150.171.16.38^{🇺🇸 Microsoft150.171.0.0/16 MICROSOFT}
			PTR	`ns2-38.azure-dns.net`
NS	`ns3-38.azure-dns.org`
		A	2a01:111:4000:10::26^{🇬🇧 Microsoft2a01:111:4000::/36}
			PTR	`ns3-38.azure-dns.org`
		A	13.107.222.38^{🇺🇸 Microsoft13.104.0.0/14 MICROSOFT}
			PTR	`ns3-38.azure-dns.org`
NS	`ns4-38.azure-dns.info`
		A	2620:1ec:bda:10::26^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns4-38.azure-dns.info`
		A	13.107.206.38^{🇺🇸 Microsoft13.104.0.0/14 MICROSOFT}
			PTR	`ns4-38.azure-dns.info`
MX	`arecibo-inter-edu.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c802::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-cy4pr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:c902::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj0pr03cu01602.inbound.protection.outlook.com`
		A	2a01:111:f403:c902::16^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-byapr04cu00306.inbound.protection.outlook.com`
		A	2a01:111:f403:c922::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bl0pr02cu00702.inbound.protection.outlook.com`
		A	52.101.10.2^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bn8pr03cu00202.inbound.protection.outlook.com`
		A	52.101.10.6^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bn1pr21cu00106.inbound.protection.outlook.com`
		A	52.101.10.18^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bn8pr05cu00302.inbound.protection.outlook.com`
		A	52.101.41.4^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj2pr05cu00204.inbound.protection.outlook.com`
TXT	`v=spf1 ip4:164.42.166.16/32 ip4:24.139.168.76 ip4:164.42.102.51 ip4:164.42.16...`
TXT	`MS=ms58596973`
TXT	`tk5qvpi1vgg03en9n6ecki98qp`
TXT	`ocargugo82ketjiidp4tlujbiv`
SOA	`ns1-38.azure-dns.com`azuredns-hostmaster@microsoft.com serial=1

`inter.edu`

	DNSSEC	⚠️ Not signed
	A	164.42.100.101^{🇵🇷 AS16649164.42.0.0/16 COLUMBUS NETWORKS TRANSIT CUSTOMERS}
	NS	`dns03.inter.edu` ⭐
	NS	`dns04.inter.edu`
	NS	`dns99.inter.edu`
	MX	`inter-edu.mail.protection.outlook.com` ⭐
	TXT	`google-site-verification=fgEW25HaF3slhK2T1JEXiHZf1eLPo3YFuBzt7zSDBr0`
	TXT	`google-site-verification=LXcftAd1-oUQXzW2BtL5nBZxHOfRUeDFcoXMrd8Rz50`
	TXT	`v=spf1 a:secure.auth.inter.edu include:spf2.inter.edu include:spf.protection....`
	TXT	`MS=ms15358700`
	SOA	`dns03.inter.edu`jliu@inter.edu serial=2019105262

WOT: SAFE (76/100)
rank #61662 globally
rank #1036 in the tld
WOT: SAFE (96/100)
📈 Tranco rank: #83,855

Subdomains

www.arecibo.inter.edu

mail.arecibo.inter.edu

webmail.arecibo.inter.edu

Same first word

arecibo.fr

arecibo.city

arecibo.net

arecibo.com

arecibo.co.uk

arecibo.pr

Similar names

biocare.us

aerobic.ph

aerobic.jp

becoair.myshopify.com

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racebio.com

biocare.com.br

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ebraico.it

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baciero.com

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biocera.de

abercio.ch

biocare.de

biocare.ru

biocrea.net

ocaribe.org

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carebio.es

ciobera.com

ocaribe.com

becario.ai

biocare.es

biocare.co.th

becario.net

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aerobic.dk

earobic.de

obicera.com

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ericoab.se

aerobic.co.kr

aerobic.or.jp

aerobic.cz

creabio.com

biocare.vn

aricebo.com

biocare.nl

biocare.ca

aerobic.hu

biocare.ie

acerbio.com

biocare.co.uk

cerabio.com

biocera.cn

becario.es

aerobic.be

aerobic.vn

biocera.com

aerobic.es

biocera.co.kr

aricebo.org

aerobic.cn

biocera.it

biocera.co.uk

biocare.com.cn

biocare.co.il

biacore.com

icobear.com

biacore.be

biocare.be

biocare.academy

biocare.se

cebiora.digital

acorbie.com

aerobic.it

biocare.com.my

biocare.ch

biacore.nl

corebai.com

aerobic.ru

biocare.eu

biacore.net

aricebo.net

biocare.in

biocare.com.tw

aerobic.space

aerobic.ws

bioerca.com.mx

biacore.se

biocera.info

biocare.ai

aerobic.fr

aerobic.us

biocera.eu

aerobic.org

becario.com

aerobic.ca

aerobic.in

biocera.com.vn

biocare.co

biocera.kr

biocare.sk

aerobic.co

biocare.co.in

biacore.ch

DNS History

14 records (6 active, 8 former)

○NSlwdvyiqlktdm.inter.edu2026-02-14 → 2026-08-10 · 2 obs

○ 2026-02-14 22:50:48
○ 2026-08-10 06:05:54

●NSns1-38.azure-dns.com2026-02-14 → 2026-08-10 · 6 obs

○ 2021-06-19 05:07:32
● 2026-02-14 22:50:48
● 2026-02-19 12:54:58
○ 2026-02-19 13:44:12
● 2026-02-19 17:37:38
● 2026-08-10 06:05:54

○NSns1.arecibo.inter.edu2015-09-02 → 2017-09-11 · 4 obs

● 2015-09-02 22:49:36
● 2017-09-11 15:49:24
○ 2017-11-18 14:40:30
○ 2026-08-10 06:05:54

●NSns2-38.azure-dns.net2026-02-14 → 2026-08-10 · 6 obs

○ 2021-06-19 05:07:32
● 2026-02-14 22:50:48
● 2026-02-19 12:54:58
○ 2026-02-19 13:44:12
● 2026-02-19 17:37:38
● 2026-08-10 06:05:54

○NSns2.arecibo.inter.edu2015-09-08 → 2017-07-28 · 28 obs

○ 2015-09-02 22:49:36
● 2015-09-08 10:26:44
● 2015-12-26 03:41:46
○ 2016-01-10 22:30:26
● 2016-01-10 22:30:38
● 2016-01-18 02:11:34
○ 2016-01-22 23:29:46
● 2016-01-23 16:00:26
○ 2016-01-25 12:50:40
● 2016-01-26 20:52:36
● 2016-04-04 22:06:58
○ 2016-04-21 18:03:56
○ 2016-04-29 18:01:54
● 2016-05-01 07:28:08
○ 2016-05-10 12:02:50
● 2016-05-14 23:41:52
○ 2016-06-03 06:57:24
● 2016-06-07 10:33:32
○ 2016-06-25 18:42:56
● 2016-06-25 21:59:12
○ 2016-07-26 22:23:02
● 2016-08-26 21:40:40
● 2016-10-05 11:20:48
○ 2016-10-21 08:43:12
● 2016-11-06 06:23:02
● 2017-07-28 19:36:28
○ 2017-09-11 15:49:24
○ 2026-08-10 06:05:54

●NSns3-38.azure-dns.org2026-02-14 → 2026-08-10 · 6 obs

○ 2021-06-19 05:07:32
● 2026-02-14 22:50:48
● 2026-02-19 12:54:58
○ 2026-02-19 13:44:12
● 2026-02-19 17:37:38
● 2026-08-10 06:05:54

●NSns4-38.azure-dns.info2026-02-14 → 2026-08-10 · 6 obs

○ 2021-06-19 05:07:32
● 2026-02-14 22:50:48
● 2026-02-19 12:54:58
○ 2026-02-19 13:44:12
● 2026-02-19 17:37:38
● 2026-08-10 06:05:54

○NSns53.domaincontrol.com2017-11-18 → 2021-06-19 · 5 obs

○ 2017-09-11 15:49:24
● 2017-11-18 14:40:30
● 2021-06-19 05:07:32
○ 2026-02-14 22:50:48
○ 2026-08-10 06:05:54

○NSns54.domaincontrol.com2017-11-18 → 2021-06-19 · 5 obs

○ 2017-09-11 15:49:24
● 2017-11-18 14:40:30
● 2021-06-19 05:07:32
○ 2026-02-14 22:50:48
○ 2026-08-10 06:05:54

●MXarecibo-inter-edu.mail.protection.outlook.com2015-09-02 → 2026-08-10 · 12 obs

● 2015-09-02 22:49:36
● 2026-02-18 16:07:40
○ 2026-02-19 12:54:58
○ 2026-02-19 13:44:12
● 2026-02-19 17:37:38
○ 2026-06-19 11:41:16
● 2026-06-21 16:02:14
○ 2026-06-22 22:39:46
● 2026-06-23 10:57:52
○ 2026-07-09 18:54:00
● 2026-07-10 20:34:04
● 2026-08-10 06:05:54

○MXms58596973.msv1.invalid.outlook.com2015-09-02 → 2026-02-15 · 7 obs

● 2015-09-02 22:49:36
● 2017-09-11 15:49:24
○ 2017-11-18 14:40:30
● 2018-05-24 19:54:06
● 2026-02-15 12:41:52
○ 2026-02-16 03:57:34
○ 2026-08-10 06:05:54

○A164.42.166.192017-11-18 → 2017-11-18 · 3 obs

● 2017-11-18 14:40:30
○ 2018-05-24 19:54:06
○ 2026-08-10 06:05:54

○A164.42.166.402017-11-18 → 2018-05-24 · 4 obs

● 2017-11-18 14:40:30
● 2018-05-24 19:54:06
○ 2018-08-13 09:34:16
○ 2026-08-10 06:05:54

●A173.201.74.272018-08-13 → 2026-08-10 · 13 obs

○ 2018-05-24 19:54:06
● 2018-08-13 09:34:16
● 2026-02-18 16:07:40
○ 2026-02-19 12:54:58
○ 2026-02-19 13:44:12
● 2026-02-19 17:37:38
○ 2026-06-19 11:41:16
● 2026-06-21 16:02:14
○ 2026-06-22 22:39:46
● 2026-06-23 10:57:52
○ 2026-07-09 18:54:00
● 2026-07-10 20:34:04
● 2026-08-10 06:05:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
edu	d.edu-servers.net, b.edu-servers.net, f.edu-servers.net, h.edu-servers.net...	-
inter.edu	dns03.inter.edu, dns04.inter.edu, dns99.inter.edu	3 records
arecibo.inter.edu	ns3-38.azure-dns.org, ns2-38.azure-dns.net, ns4-38.azure-dns.info, ns1-38.azure-dns.com	8 records

✅ Authoritative Response

Server:13.107.222.38

NS records: ns3-38.azure-dns.org, ns2-38.azure-dns.net, ns4-38.azure-dns.info, ns1-38.azure-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for arecibo.inter.edu (unsigned zone)

⏱️ Timing

Total: 368ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`173.201.74.27`
NS	4	`ns1-38.azure-dns.com, ns2-38.azure-dns.net...`
MX	1	`arecibo-inter-edu.mail.protection.outloo`
TXT	4	`MS=ms58596973, ocargugo82ketjiidp4tlujbiv...`
SOA	1	`ns1-38.azure-dns.com azuredns-hostmaster`

📌 Glue Records Collected

Total: 11

In-bailiwick: 3 (dns03.inter.edu, dns04.inter.edu, dns99.inter.edu)

Out-of-bailiwick: 8 (ns3-38.azure-dns.org, ns3-38.azure-dns.org, ns2-38.azure-dns.net...)

Analysis

Hierarchy

www.arecibo.inter.edu, mail.arecibo.inter.edu and webmail.arecibo.inter.edu are all subdomains of arecibo.inter.edu.

IP Addresses

arecibo.inter.edu directs to one IP number, which is 173.201.74.27.

Other hosts including ns2.genx10.com, businesscoinbr.com and ns54.domaincontrol.com share IP addresses with arecibo.inter.edu.

Name Servers

The domain arecibo.inter.edu is delegated to these four name servers: ns1-38.azure-dns.com, ns4-38.azure-dns.info, ns2-38.azure-dns.net and ns3-38.azure-dns.org.

The name servers of arecibo.inter.edu overlap at least partially with those of other domains — among them ofaas.jp, 83.217.48.in-addr.arpa, goldiesystems.com and two more.

Each of the four hosts ns1-38.azure-dns.com, ns4-38.azure-dns.info, ns2-38.azure-dns.net and ns3-38.azure-dns.org has two IP addresses. ns1-38.azure-dns.com points to 150.171.10.38 and 2603:1061:0:10::26. ns4-38.azure-dns.info points to 13.107.206.38 and 2620:1ec:bda:10::26. ns2-38.azure-dns.net points to 150.171.16.38 and 2620:1ec:8ec:10::26. ns3-38.azure-dns.org points to 13.107.222.38 and 2a01:111:4000:10::26.

Mail Servers

arecibo.inter.edu routes its mail through a single mail server, arecibo-inter-edu.mail.protection.outlook.com.

arecibo-inter-edu.mail.protection.outlook.com directs to 8 IP numbers, including 52.101.10.2, 52.101.10.6 and 52.101.10.18, along with 5 other.

arecibo.inter.edu - robtex.com