Calls into Germany now connect at roughly 14% when measured by calls lasting longer than 60 seconds — down from about 18% three years ago, according to Close's own calling data. The decline is gradual, not a collapse, but it has a structural cause that US sales teams don't face: Germany has no mandated caller-authentication standard, and that changes everything about how spam labeling works there.

Why the usual fixes don't work in Germany

In the US, STIR/SHAKEN registration and carrier verification programs let carriers confirm a number belongs to a legitimate business and give sellers a route to correct false spam labels. Neither program applies to German numbers. Teams buying new numbers and tweaking CRM settings are pulling levers that don't exist in this market.

Instead, spam labeling in Germany runs almost entirely on crowdsourced, app-based detection. Hiya now powers spam identification on Samsung devices and across O2/Telefónica; Deutsche Telekom uses RealNetworks-based filtering; Clever Dialer, tellows, and Should I Answer cover the rest. These systems flag numbers algorithmically based on calling behavior. A number that is new, makes a high volume of short calls to many different people in a short window, and picks up a handful of "spam" taps gets labeled within days — regardless of provider or business legitimacy.

This produces the pattern German sales leaders know well: a rep dials thirty leads from the dialer, then calls the same thirty from a personal mobile the next day and reaches noticeably more people. The mobile isn't a better phone. It has no high-volume usage pattern attached, so no detection system has reason to flag it.

Two consequences follow. Buying new numbers doesn't work — a fresh number looks clean for a few days, then the same dialing pattern gets it flagged again. It resets the timer rather than fixing the problem. And the personal-mobile advantage doesn't scale: the moment a rep dials like a sales team from that number, it starts looking like one.

Regulators won't solve this either. The Bundesnetzagentur can fine and block egregious offenders, but it blocked roughly 1,400 numbers in all of 2023. Enforcement is reactive and nowhere near the scale of the problem.

Five levers that exist today

Register numbers with Hiya. Hiya Connect offers free number registration that takes under a day. It provides visibility into each number's spam status and a direct channel to correct false flags. Since Hiya powers spam identification on Samsung devices and O2's network, one registration covers a large share of the German mobile market. Most teams have never heard of it.

Cut per-number call velocity. The biggest trigger for detection systems is a burst of short calls to many different numbers — an exact description of what a power dialer produces. Teams can keep total volume by spreading it across a larger number pool with conservative daily caps, warming new numbers gradually, and watching the short-call ratio. A number producing mostly sub-20-second calls builds a bad reputation whether or not anyone taps "spam." Fewer dials that actually connect beats more dials silently filtered.

Verify local presence setup. German regulation requires a number's area code to match the registered business address. The practical effect: calling Hamburg leads from a Munich-registered number undermines local presence even though the number looks local. If a lead list spans regions and the number pool doesn't, connects are being lost for reasons unrelated to spam labeling.

Check number reputation weekly. Free lookup tools — tellows.de, Clever Dialer, Hiya's own checker — let teams catch a flag in days instead of discovering it three weeks later when a campaign underperforms.

Warm the channel before the first call. An SMS or email touch before the first dial means the lead recognizes the number instead of reporting it — the outcome that actually costs a team. The broader context: cold, call-first outreach converts at roughly 1–2% per dial industry-wide, down from 5–6% a decade ago. Leading with async channels and using the call as a later, higher-context touch outperforms call-first cadence in most markets. Germany just punishes the old approach faster.

Is Germany actually worse?

Close checked its own data before publishing. German answer rates are broadly in line with non-German rates in the dataset, and the three-year decline tracks with falling answer rates in every market. Two caveats apply: an aggregate can hide a specific team's bad experience with a specific number pool — a team at 2% connect rate needs diagnosis, not the 14% average — and comparing a VoIP number to a personal mobile was never a like-for-like test. A fairer comparison is one dialer against another VoIP provider serving Germany.

The direction of travel matters more than the current number. Both iOS and Android now ship native AI call screening, and the share of people answering unrecognized numbers is falling everywhere, regardless of which system places the call. Any strategy built on "more dials will fix it" is running into a wall that is still moving.

Close closes with a note on workflow: connect rate is one number, but deals are won in what happens on and after the call. The company's position is that dialing inside the CRM — where calls, transcripts, and lead context sit together — produces reps who open leads already knowing what's been said, with follow-up that doesn't depend on memory. The teams doing best in hard calling markets aren't the ones with the most numbers; they treat the call as one touch in a sequence that already has momentum.

None of this is a single switch, and Close says so plainly rather than promising a fix that doesn't yet exist in the German market. The teams using these five levers are outperforming the ones buying new numbers and hoping — and as native call screening spreads, that gap will widen.