IONOS / 1&1

Registrar DNS Serves 649,618 new-gTLD domains across 476 TLDs, 1.82% of all domains whose nameservers we can attribute. www.ionos.com/

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

.store — 175.46k (27.01%).online — 121.48k (18.7%).app — 39,919 (6.14%).shop — 27,161 (4.18%).cloud — 21,464 (3.3%).tech — 11,392 (1.75%).xyz — 11,127 (1.71%).global — 10,524 (1.62%).club — 10,037 (1.55%).berlin — 8,967 (1.38%)Other — 212.09k (32.65%)
649.62kzone, 19 Sep 2026
TLD share for IONOS / 1&1
.store175.46k27.01%
.online121.48k18.7%
.app39,9196.14%
.shop27,1614.18%
.cloud21,4643.3%
.tech11,3921.75%
.xyz11,1271.71%
.global10,5241.62%
.club10,0371.55%
.berlin8,9671.38%
Other466 more TLDs212.09k32.65%

The ten largest of 476 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 649,618 counted under new gTLDs alone.

TLDs served

as of 19 Sep 2026
TLD Domains here Share of this provider Of the TLD
.wedding 168
0.03%
.alsace 166
0.03%
7.2%
.pizza 165
0.03%
1.63%
.holdings 163
0.03%
1.78%
.money 163
0.03%
0.74%
.blue 160
0.02%
1.07%
.ink 158
0.02%
0.11%
.deals 154
0.02%
1.69%
.delivery 149
0.02%
1.03%
.industries 149
0.02%
2.06%
.archi 145
0.02%
.football 143
0.02%
2.22%
.fyi 143
0.02%
0.23%
.parts 143
0.02%
1.92%
.credit 142
0.02%
2.52%
.fund 138
0.02%
0.62%
.careers 133
0.02%
1.43%
.bet 132
0.02%
0.07%
.exchange 130
0.02%
0.69%
.healthcare 124
0.02%
1.37%
.surf 123
0.02%
.contractors 121
0.02%
3.46%
.dentist 121
0.02%
4.71%
.watch 117
0.02%
0.82%
.apartments 116
0.02%
2.88%
.page 116
0.02%
0.3%
.science 113
0.02%
0.96%
.doctor 112
0.02%
.ist 112
0.02%
.uno 110
0.02%
.quebec 108
0.02%
.tienda 108
0.02%
5.5%
.equipment 107
0.02%
2.51%
.auction 106
0.02%
1.87%
.cash 105
0.02%
0.51%
.gold 105
0.02%
0.7%
.physio 105
0.02%
.vegas 104
0.02%
.press 103
0.02%
.shopping 103
0.02%
.engineer 101
0.02%
1.32%
.supply 101
0.02%
1.27%
.fish 100
0.02%
1.71%
.miami 100
0.02%
.shoes 99
0.02%
2.67%
.place 98
0.02%
0.95%
.trade 97
0.01%
.hosting 96
0.01%
.ski 95
0.01%
.rip 94
0.01%
0.85%
.tennis 94
0.01%
.tattoo 91
0.01%
.build 90
0.01%
.moe 88
0.01%
.vacations 86
0.01%
2.76%
.codes 84
0.01%
0.42%
.black 83
0.01%
1.4%
.glass 83
0.01%
2.33%
.attorney 81
0.01%
1.73%
.racing 80
0.01%
1.73%
.menu 79
0.01%
.dating 78
0.01%
1.8%
.insure 78
0.01%
1.24%
.cleaning 77
0.01%
3.2%
.accountants 76
0.01%
4.74%
.supplies 76
0.01%
2.79%
.theater 76
0.01%
.associates 75
0.01%
2.03%
.pics 75
0.01%
.reise 75
0.01%
9.03%
.garden 72
0.01%
0.03%
.reviews 72
0.01%
0.65%
.camera 71
0.01%
2.21%
.investments 71
0.01%
0.98%
.rent 71
0.01%
0.65%
.toys 71
0.01%
1.33%
.builders 70
0.01%
1.14%
.cab 70
0.01%
1.81%
.luxury 70
0.01%
.lol 69
0.01%
0.01%
.property 69
0.01%
.beauty 65
0.01%
.horse 64
0.01%
.claims 63
0.01%
1.57%
.forsale 63
0.01%
1.61%
.financial 62
0.01%
0.79%
.vin 62
0.01%
.voyage 62
0.01%
1.66%
.salon 61
0.01%
1.43%
.soccer 60
0.01%
.pink 59
0.01%
0.88%
.kim 56
0.01%
0.71%
.vote 55
0.01%
.futbol 54
0.01%
2.38%
.sarl 54
0.01%
2.65%
.lat 51
0.01%
.singles 51
0.01%
1.72%
.furniture 50
0.01%
2.13%
.host 50
0.01%
.best 49
0.01%

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.