`worldoptometrycongress.com`

DNSSEC	⚠️ Not signed
A	2607:f1c0:100f:f000::206^{🇺🇸 IONOS-AS2607:f1c0::/32 1&1 Internet Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
		PTR	`2607-f1c0-100f-f000-0000-0000-0000-0206.elastic-ssl.ui-r.com`
A	74.208.236.215^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
NS	`ns1098.ui-dns.org` ⭐
		A	2001:8d8:fe:53:0:d9a0:5362:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1098.ui-dns.org`
		A	217.160.83.98^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1098.ui-dns.org`
NS	`ns1098.ui-dns.biz`
		A	2001:8d8:fe:53:0:d9a0:5162:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1098.ui-dns.biz`
		A	217.160.81.98^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1098.ui-dns.biz`
NS	`ns1098.ui-dns.com`
		A	2001:8d8:fe:53:0:d9a0:5262:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1098.ui-dns.com`
		A	217.160.82.98^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1098.ui-dns.com`
NS	`ns1098.ui-dns.de`
		A	2607:f1c0:fe:53:185:132:32:98^{🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
			PTR	`ns1098.ui-dns.de`
		A	217.160.80.98^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1098.ui-dns.de`
MX	`mx00.ionos.com` ⭐
		A	74.208.5.3^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
			PTR	`mx00.perfora.net`
MX	`mx01.ionos.com` ⭐
		A	74.208.5.21^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
			PTR	`mx01.perfora.net`
TXT	`v=spf1 include:_spf-us.ionos.com ~all`
SOA	`ns1098.ui-dns.org`hostmaster@1and1.com 2016-06-16 #3

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1774454997

Same first word

worldoptometrycongress.info

worldoptometrycongress.com

DNS History

18 records (8 active, 10 former)

○NSns-us.1and1-dns.com2015-07-18 → 2017-01-27 · 4 obs

● 2015-07-18 23:06:18
● 2017-01-27 01:53:04
○ 2018-07-14 13:12:16
○ 2026-03-25 16:21:52

○NSns-us.1and1-dns.de2015-07-18 → 2017-01-27 · 4 obs

● 2015-07-18 23:06:18
● 2017-01-27 01:53:04
○ 2018-07-14 13:12:16
○ 2026-03-25 16:21:52

○NSns-us.1and1-dns.org2015-07-18 → 2017-01-27 · 4 obs

● 2015-07-18 23:06:18
● 2017-01-27 01:53:04
○ 2018-07-14 13:12:16
○ 2026-03-25 16:21:52

○NSns-us.1and1-dns.us2015-07-18 → 2017-01-27 · 4 obs

● 2015-07-18 23:06:18
● 2017-01-27 01:53:04
○ 2018-07-14 13:12:16
○ 2026-03-25 16:21:52

●NSns1098.ui-dns.biz2018-07-14 → 2026-03-25 · 3 obs

○ 2017-01-27 01:53:04
● 2018-07-14 13:12:16
● 2026-03-25 16:21:52

●NSns1098.ui-dns.com2018-07-14 → 2026-03-25 · 3 obs

○ 2017-01-27 01:53:04
● 2018-07-14 13:12:16
● 2026-03-25 16:21:52

●NSns1098.ui-dns.de2018-07-14 → 2026-03-25 · 3 obs

○ 2017-01-27 01:53:04
● 2018-07-14 13:12:16
● 2026-03-25 16:21:52

●NSns1098.ui-dns.org2018-07-14 → 2026-03-25 · 3 obs

○ 2017-01-27 01:53:04
● 2018-07-14 13:12:16
● 2026-03-25 16:21:52

○MXmx00.1and1.com2015-07-18 → 2018-07-14 · 4 obs

● 2015-07-18 23:06:18
● 2018-07-14 13:12:16
○ 2026-02-15 12:10:30
○ 2026-03-25 16:21:52

●MXmx00.ionos.com2026-02-15 → 2026-03-25 · 3 obs

○ 2018-07-14 13:12:16
● 2026-02-15 12:10:30
● 2026-03-25 16:21:52

○MXmx01.1and1.com2015-07-18 → 2018-07-14 · 4 obs

● 2015-07-18 23:06:18
● 2018-07-14 13:12:16
○ 2026-02-15 12:10:30
○ 2026-03-25 16:21:52

●MXmx01.ionos.com2026-02-15 → 2026-03-25 · 3 obs

○ 2018-07-14 13:12:16
● 2026-02-15 12:10:30
● 2026-03-25 16:21:52

○A216.250.120.1162017-01-27 → 2018-07-14 · 5 obs

○ 2016-04-25 08:42:48
● 2017-01-27 01:53:04
● 2018-07-14 13:12:16
○ 2026-02-15 12:10:30
○ 2026-03-25 16:21:52

○A2607:f1c0:1000:2079:934b:26c8:1a8c:60172015-07-18 → 2016-04-25 · 4 obs

● 2015-07-18 23:06:18
● 2016-04-25 08:42:48
○ 2017-01-27 01:53:04
○ 2026-03-25 16:21:52

○A2607:f1c0:1000:2079:a659:43a5:d3d:e0392017-01-27 → 2018-07-14 · 5 obs

○ 2016-04-25 08:42:48
● 2017-01-27 01:53:04
● 2018-07-14 13:12:16
○ 2026-02-15 12:10:30
○ 2026-03-25 16:21:52

●A2607:f1c0:100f:f000::2062026-02-15 → 2026-03-25 · 3 obs

○ 2018-07-14 13:12:16
● 2026-02-15 12:10:30
● 2026-03-25 16:21:52

●A74.208.236.2152026-02-15 → 2026-03-25 · 3 obs

○ 2018-07-14 13:12:16
● 2026-02-15 12:10:30
● 2026-03-25 16:21:52

○A74.208.86.2002015-07-18 → 2016-04-25 · 4 obs

● 2015-07-18 23:06:18
● 2016-04-25 08:42:48
○ 2017-01-27 01:53:04
○ 2026-03-25 16:21:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
worldoptometrycongress.com	ns1098.ui-dns.de, ns1098.ui-dns.biz, ns1098.ui-dns.org, ns1098.ui-dns.com	2 records

✅ Authoritative Response

Server:217.160.80.98

NS records: ns1098.ui-dns.de, ns1098.ui-dns.biz, ns1098.ui-dns.org, ns1098.ui-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for worldoptometrycongress.com (unsigned zone)

⏱️ Timing

Total: 537ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`74.208.236.215`
AAAA	1	`2607:f1c0:100f:f000::206`
NS	4	`ns1098.ui-dns.de, ns1098.ui-dns.biz...`
MX	2	`mx01.ionos.com (pri: 10), mx00.ionos.com (pri: 10)`
TXT	1	`v=spf1 include:_spf-us.ionos.com ~all`
SOA	1	`ns1098.ui-dns.org hostmaster.1and1.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1098.ui-dns.com, ns1098.ui-dns.com)

Analysis

IP Addresses

worldoptometrycongress.com points to two IP numbers: 2607:f1c0:100f:f000::206 and 74.208.236.215.

Other host names, for instance www.deejaylaw.com, blanchardpm.com, thekind.com, livewiretraining.com and bonafidecomicsstore.com share IP numbers with worldoptometrycongress.com.

Name Servers

worldoptometrycongress.com is delegated to four name servers: ns1098.ui-dns.biz, ns1098.ui-dns.com, ns1098.ui-dns.de and ns1098.ui-dns.org.

worldoptometrycongress.com at least partially shares its name servers with other domains, for instance jens-seidel.com, butzer.info, golf-belleile.com, cvtt.fr and entreconfetti.com.

These name servers are commonly used with ns1063.ui-dns.biz, ns1025.ui-dns.org, ns1095.ui-dns.com, ns1070.ui-dns.com, ns1055.ui-dns.de, ns1035.ui-dns.org and ns1085.ui-dns.de.

Host names with two IPs: ns1098.ui-dns.biz points to 2001:8d8:fe:53:0:d9a0:5162:100 and 217.160.81.98; ns1098.ui-dns.com points to 2001:8d8:fe:53:0:d9a0:5262:100 and 217.160.82.98; ns1098.ui-dns.de points to 2607:f1c0:fe:53:185:132:32:98 and 217.160.80.98; ns1098.ui-dns.org points to 2001:8d8:fe:53:0:d9a0:5362:100 and 217.160.83.98.

Mail Servers

Two mail servers mx00.ionos.com and mx01.ionos.com handle worldoptometrycongress.com.

worldoptometrycongress.com uses the same mail server setup as other domains such as cloudprogramming.net, techonsite.us, harbat.com, tparcel.com and thwmail.com.

Host names with a single IP:

mx00.ionos.com resolves to 74.208.5.3.

mx01.ionos.com resolves to 74.208.5.21.

worldoptometrycongress.com - robtex.com