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IONOS / 1&1

Registrar DNS Serves 4,882,293 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 (65.97%).org — 390.61k (8%).net — 285.89k (5.86%).info — 284.05k (5.82%).store — 175.13k (3.59%).online — 121.60k (2.49%).app — 39,873 (0.82%).biz — 27,659 (0.57%).shop — 27,161 (0.56%).cloud — 21,506 (0.44%)Other — 287.99k (5.9%)
4.88Mzone, 18 Sep 2026
.com3.22M65.97%
.org390.61k8%
.net285.89k5.86%
.info284.05k5.82%
.store175.13k3.59%
.online121.60k2.49%
.app39,8730.82%
.biz27,6590.57%
.shop27,1610.56%
.cloud21,5060.44%
Other483 more TLDs287.99k5.9%

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

Nameservers in use

as of 18 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 97,294
15.7%
ns1016.ui-dns.biz 42,046
6.8%
ns1017.ui-dns.biz 41,195
6.6%
ns1018.ui-dns.biz 39,856
6.4%
ns1019.ui-dns.biz 39,827
6.4%
ns1021.ui-dns.biz 39,487
6.4%
ns1020.ui-dns.biz 37,630
6.1%
ns1022.ui-dns.biz 37,075
6%
ns1023.ui-dns.biz 36,585
5.9%
ns1024.ui-dns.biz 36,377
5.9%
ns1025.ui-dns.biz 36,185
5.8%
ns1027.ui-dns.biz 35,466
5.7%
ns-de.1and1-dns.com 34,862
5.6%
ns1026.ui-dns.biz 33,471
5.4%
ns1028.ui-dns.biz 33,424
5.4%

These 15 nameservers carry 620,780 of the 4,882,343 domains this provider serves across every zone we parse, which spans new and legacy gTLDs together — more than the 4,882,293 counted under gTLDs alone.

TLDs served

as of 18 Sep 2026
TLD Domains here Share of this provider Of the TLD
.ngo 12
0%
0.27%
.bingo 13
0%
0.35%
.ceo 13
0%
0.15%
.coupons 13
0%
0.16%
.corsica 14
0%
0.58%
.country 14
0%
0.53%
.irish 14
0%
0.31%
.loan 15
0%
0.07%
.abogado 16
0%
2.9%
.hiphop 16
0%
1.37%
.brussels 17
0%
0.22%
.democrat 17
0%
1.73%
.cheap 18
0%
0.52%
.ing 18
0%
0.08%
.review 18
0%
0.24%
.desi 19
0%
1.03%
.lease 20
0%
1.12%
.makeup 20
0%
0.02%
.stream 20
0%
0.12%
.cam 21
0%
0.02%
.guitars 21
0%
4.19%
.homes 22
0%
0.02%
.sbs 22
0%
0%
.coop 23
0%
0.28%
.webcam 23
0%
1.14%
.ovh 24
0%
0.03%
.cruises 25
0%
1.1%
.music 25
0%
0.19%
.eco 26
0%
0.38%
.exposed 26
0%
0.9%
.hockey 26
0%
1.41%
.rehab 26
0%
1.26%
.skin 27
0%
0.02%
.men 28
0%
0.25%
.vodka 28
0%
1.62%
.capetown 29
0%
0.82%
.moda 29
0%
1.31%
.christmas 30
0%
0.17%
.gift 30
0%
0.59%
.hospital 30
0%
1.51%
.limo 31
0%
1.41%
.tokyo 31
0%
0.04%
.florist 32
0%
1.85%
.hair 32
0%
0.05%
.viajes 32
0%
4.86%
.accountant 33
0%
2.27%
.mortgage 33
0%
0.92%
.fishing 34
0%
1.92%
.tube 34
0%
0.98%
.diamonds 35
0%
1.8%
.fail 35
0%
0.82%
.poker 35
0%
0.62%
.rest 35
0%
0.03%
.actor 36
0%
1.11%
.download 36
0%
0.43%
.faith 36
0%
0.67%
.fans 36
0%
0.39%
.organic 36
0%
2.33%
.recipes 36
0%
0.89%
.sexy 36
0%
1.29%
.casino 37
0%
0.03%
.loans 37
0%
0.69%
.army 38
0%
0.68%
.bid 39
0%
0.07%
.college 39
0%
0.5%
.gay 39
0%
0.21%
.lgbt 39
0%
1.11%
.maison 39
0%
2.55%
.flights 40
0%
1.76%
.llc 40
0%
0.07%
.villas 40
0%
0.54%
.cooking 41
0%
1.83%
.travel 42
0%
0.15%
.win 42
0%
0.02%
.jewelry 45
0%
1.25%
.buzz 46
0%
0.02%
.mba 47
0%
0.93%
.boston 48
0%
1.11%
.gifts 48
0%
0.85%
.plumbing 48
0%
1.96%
.surgery 48
0%
2.96%
.town 48
0%
0.63%
.best 49
0%
0.07%
.furniture 50
0%
2.13%
.host 50
0%
0.2%
.lat 51
0%
0.02%
.singles 51
0%
1.72%
.futbol 54
0%
2.38%
.sarl 54
0%
2.66%
.kim 56
0%
0.71%
.vote 56
0%
0.9%
.aero 58
0%
0.42%
.pink 59
0%
0.88%
.soccer 60
0%
1.63%
.salon 61
0%
1.43%
.financial 62
0%
0.79%
.vin 62
0%
0.37%
.voyage 62
0%
1.66%
.claims 63
0%
1.57%
.forsale 63
0%
1.61%

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.