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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
.guru 610
0.01%
1.06%
.wien 605
0.01%
–
.photo 598
0.01%
–
.land 596
0.01%
2.77%
.tax 574
0.01%
–
.haus 573
0.01%
6.71%
.kaufen 572
0.01%
12.9%
.africa 570
0.01%
–
.social 570
0.01%
–
.schule 563
0.01%
12.09%
.works 560
0.01%
1.45%
.school 555
0.01%
2.26%
.bike 554
0.01%
3.5%
.cafe 538
0.01%
2.14%
.city 524
0.01%
1.64%
.band 509
0.01%
2.52%
.capital 497
0.01%
1.35%
.photos 486
0.01%
2.56%
.zone 486
0.01%
1.51%
.gmx 477
0.01%
–
.madrid 450
0.01%
14.01%
.institute 449
0.01%
1.99%
.solar 445
0.01%
4.78%
.fit 441
0.01%
0.5%
.reisen 433
0.01%
10.69%
.dental 429
0.01%
4.86%
.house 418
0.01%
1.72%
.tools 406
0.01%
1.33%
.guide 381
0.01%
1.9%
.fitness 377
0.01%
2.72%
.partners 375
0.01%
2.14%
.dog 369
0.01%
2.04%
.direct 364
0.01%
2.96%
.finance 361
0.01%
1.05%
.restaurant 348
0.01%
4.12%
.love 347
0.01%
0.55%
.onl 347
0.01%
–
.vision 344
0.01%
3.02%
.taxi 338
0.01%
–
.video 335
0.01%
–
.wine 334
0.01%
–
.promo 329
0.01%
–
.estate 326
0.01%
2.92%
.farm 317
0.01%
1.15%
.ventures 312
0.01%
1.3%
.barcelona 306
0.01%
6.71%
.limited 306
0.01%
4.56%
.bar 304
0.01%
–
.dance 299
0.01%
3.49%
.wtf 298
0.01%
–
.golf 297
0.01%
1.56%
.market 296
0.01%
1.54%
.clinic 295
0.01%
1.56%
.boutique 292
0.01%
1.57%
.gal 288
0.01%
3.73%
.pet 288
0.01%
1.43%
.yoga 288
0.01%
–
.help 286
0.01%
–
.show 281
0.01%
1.49%
.properties 280
0.01%
2.16%
.contact 279
0.01%
–
.vip 275
0.01%
–
.vet 272
0.01%
–
.cool 268
0.01%
1.22%
.fashion 267
0.01%
2.04%
.tirol 267
0.01%
–
.directory 266
0.01%
1.78%
.run 264
0.01%
0.19%
.foundation 258
0.01%
0.83%
.click 254
0.01%
–
.express 254
0.01%
3.01%
.clothing 247
0.01%
2.66%
.health 244
0%
–
.tours 241
0%
–
.wiki 238
0%
0.17%
.pub 233
0%
1.35%
.party 228
0%
1.05%
.lawyer 227
0%
2.77%
.lighting 218
0%
4.03%
.productions 218
0%
2.03%
.top 213
0%
–
.chat 212
0%
0.37%
.sale 212
0%
1.47%
.computer 211
0%
2.22%
.catering 209
0%
6.93%
.audio 208
0%
–
.engineering 208
0%
1.86%
.beer 207
0%
–
.holiday 204
0%
5.95%
.camp 203
0%
2.56%
.gratis 203
0%
6.7%
.kitchen 202
0%
2.68%
.ninja 202
0%
0.85%
.green 201
0%
–
.cards 198
0%
1.36%
.repair 197
0%
2.27%
.film 194
0%
2.67%
.red 194
0%
1.06%
.style 194
0%
–
.discount 191
0%
5.83%

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 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.