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IONOS / 1&1

Registrar DNS Serves 4,883,005 gTLD domains across 493 TLDs, 3.02% of all domains whose nameservers we can attribute. www.ionos.com/

New gTLDs Legacy gTLDs All gTLDs
The registrar's own nameservers, used by default for domains that have not been pointed elsewhere — which includes both active sites and domains doing nothing at all.

How domains are attributed here

A domain counts towards IONOS / 1&1 when one of its nameservers ends in one of these suffixes. Matching is on the name in the zone's NS records only — nothing is resolved or fetched. Listed by weight, which is the order the classifier tries them in so a specific suffix beats a broader one.

Nameserver suffixWeight
1and1-dns.com 10
ui-dns.biz 10
ui-dns.com 10
ui-dns.de 10
ui-dns.org 10

Where its domains are

Source: Daily zone files

.com — 3.22M (65.96%).org — 390.57k (8%).net — 285.92k (5.86%).info — 284.43k (5.82%).store — 175.46k (3.59%).online — 121.48k (2.49%).app — 39,919 (0.82%).biz — 27,648 (0.57%).shop — 27,161 (0.56%).cloud — 21,464 (0.44%)Other — 288.00k (5.9%)
4.88Mzone, 19 Sep 2026
.com3.22M65.96%
.org390.57k8%
.net285.92k5.86%
.info284.43k5.82%
.store175.46k3.59%
.online121.48k2.49%
.app39,9190.82%
.biz27,6480.57%
.shop27,1610.56%
.cloud21,4640.44%
Other483 more TLDs288.00k5.9%

The ten largest of 493 TLDs, with the rest combined; all of them are in the table below.

Nameservers in use

as of 19 Sep 2026

The hostnames actually found in the zones, with how many domains name each. The suffixes above are the rule; these are what the rule matched. Counted across all gTLDs rather than the current scope, since the aggregate is built in one pass over every zone. Showing the fifteen largest.

Nameserver Domains Share of these
ns1045.ui-dns.biz 97,297
15.7%
ns1016.ui-dns.biz 42,015
6.8%
ns1017.ui-dns.biz 41,137
6.6%
ns1019.ui-dns.biz 40,260
6.5%
ns1018.ui-dns.biz 40,052
6.4%
ns1021.ui-dns.biz 39,434
6.3%
ns1020.ui-dns.biz 37,602
6.1%
ns1022.ui-dns.biz 37,061
6%
ns1023.ui-dns.biz 36,565
5.9%
ns1024.ui-dns.biz 36,362
5.9%
ns1025.ui-dns.biz 36,213
5.8%
ns1027.ui-dns.biz 35,618
5.7%
ns-de.1and1-dns.com 34,841
5.6%
ns1026.ui-dns.biz 33,464
5.4%
ns1028.ui-dns.biz 33,419
5.4%

These 15 nameservers carry 621,340 of the 4,883,055 domains this provider serves across every zone we parse, which spans new and legacy gTLDs together — more than the 4,883,005 counted under gTLDs alone.

TLDs served

as of 19 Sep 2026
TLD Domains here Share of this provider Of the TLD
.com 3,220,951
65.96%
1.93%
.org 390,570
8%
3.21%
.net 285,924
5.86%
2.31%
.info 284,428
5.82%
5.48%
.store 175,456
3.59%
8.44%
.online 121,481
2.49%
3.42%
.app 39,919
0.82%
2.41%
.biz 27,648
0.57%
2.14%
.shop 27,161
0.56%
0.62%
.cloud 21,464
0.44%
3.91%
.tech 11,392
0.23%
1.98%
.xyz 11,127
0.23%
0.11%
.global 10,524
0.22%
13.75%
.club 10,037
0.21%
1.82%
.berlin 8,967
0.18%
21.05%
.name 7,937
0.16%
11.04%
.site 7,917
0.16%
0.41%
.pro 7,581
0.16%
0.66%
.gmbh 7,334
0.15%
22.13%
.dev 6,648
0.14%
0.87%
.website 5,521
0.11%
2.34%
.srl 4,942
0.1%
39.06%
.art 4,577
0.09%
1.5%
.studio 4,491
0.09%
2.21%
.cat 4,490
0.09%
3.85%
.icu 4,320
0.09%
0.77%
.nrw 4,269
0.09%
23.78%
.email 4,020
0.08%
3.21%
.bayern 3,686
0.08%
13.21%
.space 3,657
0.07%
0.64%
.life 3,592
0.07%
0.82%
.world 3,343
0.07%
0.8%
.koeln 3,241
0.07%
19.36%
.immo 3,177
0.07%
14.59%
.fun 3,172
0.06%
0.82%
.one 3,103
0.06%
1.19%
.mobi 3,067
0.06%
1.42%
.solutions 3,065
0.06%
3.04%
.hamburg 2,928
0.06%
19.67%
.digital 2,865
0.06%
0.63%
.group 2,861
0.06%
2.28%
.scot 2,573
0.05%
19.13%
.consulting 2,467
0.05%
6.21%
.london 2,332
0.05%
6.54%
.live 2,328
0.05%
0.38%
.blog 2,316
0.05%
0.63%
.media 2,137
0.04%
2.1%
.services 2,117
0.04%
2.48%
.academy 2,083
0.04%
3.25%
.agency 2,040
0.04%
1.68%
.ltd 2,008
0.04%
1.79%
.rocks 1,785
0.04%
3.39%
.wales 1,678
0.03%
12.92%
.team 1,670
0.03%
2.35%
.nyc 1,518
0.03%
2.52%
.immobilien 1,498
0.03%
20.09%
.paris 1,496
0.03%
7.85%
.events 1,491
0.03%
4.1%
.design 1,455
0.03%
1.27%
.jetzt 1,346
0.03%
11.72%
.family 1,327
0.03%
3.53%
.care 1,267
0.03%
2.67%
.news 1,252
0.03%
1.65%
.photography 1,249
0.03%
3.77%
.center 1,178
0.02%
2.43%
.legal 1,158
0.02%
5.11%
.coach 1,142
0.02%
4.31%
.education 1,140
0.02%
3.86%
.systems 1,092
0.02%
2.41%
.expert 1,048
0.02%
3.89%
.bio 1,041
0.02%
1.45%
.network 1,022
0.02%
1.29%
.business 965
0.02%
2.46%
.company 958
0.02%
0.99%
.training 952
0.02%
4.16%
.ruhr 947
0.02%
21.88%
.energy 904
0.02%
3.14%
.church 872
0.02%
2.56%
.international 864
0.02%
3.39%
.plus 820
0.02%
2.08%
.today 820
0.02%
0.68%
.link 798
0.02%
0.28%
.marketing 789
0.02%
2.8%
.support 787
0.02%
1.99%
.games 764
0.02%
0.97%
.work 751
0.02%
0.22%
.technology 748
0.02%
2.24%
.community 742
0.02%
2.97%
.tips 733
0.02%
3.96%
.earth 728
0.01%
1.78%
.saarland 703
0.01%
18.89%
.gallery 687
0.01%
3.88%
.software 683
0.01%
2.61%
.law 666
0.01%
2.66%
.management 654
0.01%
5.38%
.cologne 650
0.01%
17.2%
.cymru 644
0.01%
7.42%
.asia 641
0.01%
0.09%
.coffee 629
0.01%
2.25%
.eus 616
0.01%
3.84%

Data currency. Domain counts on this page are from zone files dated and refresh daily. Registrar figures are from ICANN's monthly registry reports for May 2026, which ICANN publishes about three months in arrears; zone files contain no registrar information, so no fresher source exists. Full detail on methodology and live pipeline status.