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IONOS / 1&1

Registrar DNS Serves 1,625,664 gTLD domains across 481 TLDs, 2.98% 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

.org — 391.42k (24.08%).net — 285.38k (17.55%).info — 276.62k (17.02%).store — 166.42k (10.24%).online — 124.00k (7.63%).app — 39,312 (2.42%).biz — 27,920 (1.72%).shop — 26,416 (1.62%).cloud — 22,415 (1.38%).xyz — 12,365 (0.76%)Other — 253.40k (15.59%)
1.63Mzone, 19 Aug 2026
.org391.42k24.08%
.net285.38k17.55%
.info276.62k17.02%
.store166.42k10.24%
.online124.00k7.63%
.app39,3122.42%
.biz27,9201.72%
.shop26,4161.62%
.cloud22,4151.38%
.xyz12,3650.76%
Other471 more TLDs253.40k15.59%

The ten largest of 481 TLDs, with the rest combined; all of them are in the table below.

Nameservers in use

as of 19 Aug 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
ns-de.1and1-dns.com 28,934
13.7%
ns1045.ui-dns.biz 22,724
10.8%
ns1016.ui-dns.biz 13,805
6.6%
ns1017.ui-dns.biz 13,319
6.3%
ns1021.ui-dns.biz 13,244
6.3%
ns1018.ui-dns.biz 13,016
6.2%
ns1019.ui-dns.biz 12,905
6.1%
ns1023.ui-dns.biz 12,108
5.7%
ns1020.ui-dns.biz 11,845
5.6%
ns1022.ui-dns.biz 11,805
5.6%
ns1024.ui-dns.biz 11,728
5.6%
ns-us.1and1-dns.com 11,636
5.5%
ns1025.ui-dns.biz 11,580
5.5%
ns1027.ui-dns.biz 11,239
5.3%
ns1018.ui-dns.com 10,739
5.1%

Shares are of the 210,627 domains on these 15 nameservers, not of the provider's 1,625,664.

TLDs served

as of 19 Aug 2026
TLD Domains here Share of this provider Of the TLD
.org 391,423
24.08%
3.24%
.net 285,375
17.55%
2.31%
.info 276,615
17.02%
5.28%
.store 166,418
10.24%
8.03%
.online 124,001
7.63%
3.56%
.app 39,312
2.42%
2.51%
.biz 27,920
1.72%
2.18%
.shop 26,416
1.62%
0.6%
.cloud 22,415
1.38%
4.19%
.xyz 12,365
0.76%
0.13%
.tech 11,370
0.7%
2.04%
.club 10,173
0.63%
1.86%
.site 7,849
0.48%
0.42%
.pro 7,520
0.46%
0.65%
.gmbh 7,454
0.46%
22.5%
.global 7,039
0.43%
9.73%
.dev 6,647
0.41%
0.9%
.website 5,571
0.34%
2.41%
.srl 4,552
0.28%
37.18%
.art 4,544
0.28%
1.51%
.cat 4,491
0.28%
3.88%
.studio 4,381
0.27%
2.21%
.nrw 4,285
0.26%
23.92%
.email 4,040
0.25%
3.23%
.icu 3,937
0.24%
0.7%
.space 3,745
0.23%
0.67%
.bayern 3,706
0.23%
13.27%
.life 3,584
0.22%
0.82%
.koeln 3,401
0.21%
20.1%
.world 3,315
0.2%
0.8%
.fun 3,224
0.2%
0.86%
.immo 3,171
0.2%
14.64%
.one 3,110
0.19%
1.19%
.mobi 3,094
0.19%
1.24%
.solutions 3,070
0.19%
3.05%
.digital 2,854
0.18%
0.64%
.group 2,830
0.17%
2.3%
.scot 2,555
0.16%
19.09%
.consulting 2,487
0.15%
6.27%
.london 2,386
0.15%
6.65%
.blog 2,338
0.14%
0.64%
.live 2,299
0.14%
0.38%
.media 2,157
0.13%
2.13%
.services 2,146
0.13%
2.48%
.academy 2,088
0.13%
3.28%
.agency 2,058
0.13%
1.71%
.ltd 2,010
0.12%
1.82%
.rocks 1,751
0.11%
3.32%
.wales 1,681
0.1%
13.01%
.team 1,672
0.1%
2.45%
.nyc 1,533
0.09%
2.56%
.paris 1,488
0.09%
7.85%
.immobilien 1,483
0.09%
19.98%
.design 1,473
0.09%
1.29%
.events 1,471
0.09%
4.11%
.jetzt 1,355
0.08%
11.82%
.family 1,329
0.08%
3.66%
.care 1,269
0.08%
2.71%
.news 1,264
0.08%
1.65%
.photography 1,245
0.08%
3.74%
.center 1,182
0.07%
2.43%
.legal 1,150
0.07%
5.13%
.coach 1,147
0.07%
4.32%
.education 1,134
0.07%
3.84%
.systems 1,091
0.07%
2.46%
.expert 1,054
0.06%
3.9%
.bio 1,044
0.06%
1.43%
.network 1,034
0.06%
1.31%
.business 976
0.06%
2.58%
.training 964
0.06%
4.38%
.company 959
0.06%
1.04%
.ruhr 952
0.06%
22.05%
.church 890
0.05%
2.62%
.energy 881
0.05%
3.1%
.international 873
0.05%
3.42%
.today 830
0.05%
0.7%
.plus 829
0.05%
2.22%
.link 795
0.05%
0.27%
.marketing 792
0.05%
2.8%
.support 791
0.05%
2.02%
.work 760
0.05%
0.22%
.games 756
0.05%
1.04%
.community 752
0.05%
3.01%
.technology 743
0.05%
2.23%
.tips 741
0.05%
3.98%
.earth 730
0.04%
1.79%
.saarland 702
0.04%
18.92%
.gallery 697
0.04%
3.95%
.software 692
0.04%
2.67%
.cologne 677
0.04%
17.48%
.law 667
0.04%
2.72%
.management 653
0.04%
5.38%
.asia 646
0.04%
0.09%
.cymru 640
0.04%
7.4%
.coffee 628
0.04%
2.26%
.guru 613
0.04%
1.09%
.eus 612
0.04%
3.83%
.wien 608
0.04%
4.1%
.photo 602
0.04%
3.71%
.land 600
0.04%
2.83%

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 April 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.